Tuesday, April 29, 2008

Norse colonization of the Americas

Norse sailors, often referred to as Vikings, explored and settled areas of the North Atlantic, including the northeast fringes of North America, beginning in the 10th century. While this settlement process did not have the lasting effects that later settlements and conquests would have, it can be seen as a prelude to wide-scale European settlement in the Americas.

The Viking activities are often erroneously described as the Viking colonization of North America, but there are few findings to support the idea that the Vikings colonized North America, except for Greenland which they occupied for almost 500 years (see below). Outside Greenland, though, the Viking settlements only grew to a small size and never fully developed into permanent colonies, partly because of hostile relations with Native Americans, whom the Norse referred to as Skrælings. In turn, the Viking exploited the natural resources such as furs and lumber. Lumber, in particular, was in short supply in Norse Greenland, due to deforestation.

Tuesday, April 22, 2008

Green transport

Green transport is a category of sustainable transport which uses human power, animal power and renewable energy. In common usage public transport is considered a green transport option in comparison with private vehicles, as is car pooling. But some people prefer a definition that does not include public transport or vehicle movements which relies on non-renewable energy.

Green transport includes:

* walking
* cycling and some other types of human-powered transport
* Green vehicles
o solar powered vehicles
o wind powered vehicles

Tuesday, April 15, 2008

H2 (DBMS)

A subset of the SQL (Structured Query Language) standard is supported. The main programming APIs are SQL and JDBC, however the database also supports using the PostgreSQL ODBC driver by acting like a PostgreSQL server.

It is possible to create both in-memory tables, as well as disk-based tables. Tables can be persistent or temporary. Index types are hash table and tree for in-memory tables, and b-tree for disk-based tables. All data manipulation operations are transactional. Table level locking and multiversion concurrency control are implemented. The 2-phase commit protocol is supported as well, but no standard API for distributed transactions is implemented.

Tuesday, April 08, 2008

Rapid application development

Rapid application development (RAD), is a software development process developed initially by James Martin in 1991. The methodology involves iterative development, and the construction of prototypes. Traditionally the rapid application development approach involves compromises in usability, features, and/or execution speed. It is described as a process through which the development cycle of an application is expedited. Rapid Application Development thus enables quality products to be developed faster, saving valuable resources

Friday, April 04, 2008

Database normalization

Database normalization, sometimes referred to as canonical synthesis, is a technique for designing relational database tables to minimize duplication of information and, in so doing, to safeguard the database against certain types of logical or structural problems, namely data anomalies. For example, when multiple instances of a given piece of information occur in a table, the possibility exists that these instances will not be kept consistent when the data within the table is updated, leading to a loss of data integrity. A table that is sufficiently normalized is less vulnerable to problems of this kind, because its structure reflects the basic assumptions for when multiple instances of the same information should be represented by a single instance only.
heaven42: April 2008

Tuesday, April 29, 2008

Norse colonization of the Americas

Norse sailors, often referred to as Vikings, explored and settled areas of the North Atlantic, including the northeast fringes of North America, beginning in the 10th century. While this settlement process did not have the lasting effects that later settlements and conquests would have, it can be seen as a prelude to wide-scale European settlement in the Americas.

The Viking activities are often erroneously described as the Viking colonization of North America, but there are few findings to support the idea that the Vikings colonized North America, except for Greenland which they occupied for almost 500 years (see below). Outside Greenland, though, the Viking settlements only grew to a small size and never fully developed into permanent colonies, partly because of hostile relations with Native Americans, whom the Norse referred to as Skrælings. In turn, the Viking exploited the natural resources such as furs and lumber. Lumber, in particular, was in short supply in Norse Greenland, due to deforestation.

Tuesday, April 22, 2008

Green transport

Green transport is a category of sustainable transport which uses human power, animal power and renewable energy. In common usage public transport is considered a green transport option in comparison with private vehicles, as is car pooling. But some people prefer a definition that does not include public transport or vehicle movements which relies on non-renewable energy.

Green transport includes:

* walking
* cycling and some other types of human-powered transport
* Green vehicles
o solar powered vehicles
o wind powered vehicles

Tuesday, April 15, 2008

H2 (DBMS)

A subset of the SQL (Structured Query Language) standard is supported. The main programming APIs are SQL and JDBC, however the database also supports using the PostgreSQL ODBC driver by acting like a PostgreSQL server.

It is possible to create both in-memory tables, as well as disk-based tables. Tables can be persistent or temporary. Index types are hash table and tree for in-memory tables, and b-tree for disk-based tables. All data manipulation operations are transactional. Table level locking and multiversion concurrency control are implemented. The 2-phase commit protocol is supported as well, but no standard API for distributed transactions is implemented.

Tuesday, April 08, 2008

Rapid application development

Rapid application development (RAD), is a software development process developed initially by James Martin in 1991. The methodology involves iterative development, and the construction of prototypes. Traditionally the rapid application development approach involves compromises in usability, features, and/or execution speed. It is described as a process through which the development cycle of an application is expedited. Rapid Application Development thus enables quality products to be developed faster, saving valuable resources

Friday, April 04, 2008

Database normalization

Database normalization, sometimes referred to as canonical synthesis, is a technique for designing relational database tables to minimize duplication of information and, in so doing, to safeguard the database against certain types of logical or structural problems, namely data anomalies. For example, when multiple instances of a given piece of information occur in a table, the possibility exists that these instances will not be kept consistent when the data within the table is updated, leading to a loss of data integrity. A table that is sufficiently normalized is less vulnerable to problems of this kind, because its structure reflects the basic assumptions for when multiple instances of the same information should be represented by a single instance only.
heaven42: April 2008

Tuesday, April 29, 2008

Norse colonization of the Americas

Norse sailors, often referred to as Vikings, explored and settled areas of the North Atlantic, including the northeast fringes of North America, beginning in the 10th century. While this settlement process did not have the lasting effects that later settlements and conquests would have, it can be seen as a prelude to wide-scale European settlement in the Americas.

The Viking activities are often erroneously described as the Viking colonization of North America, but there are few findings to support the idea that the Vikings colonized North America, except for Greenland which they occupied for almost 500 years (see below). Outside Greenland, though, the Viking settlements only grew to a small size and never fully developed into permanent colonies, partly because of hostile relations with Native Americans, whom the Norse referred to as Skrælings. In turn, the Viking exploited the natural resources such as furs and lumber. Lumber, in particular, was in short supply in Norse Greenland, due to deforestation.

Tuesday, April 22, 2008

Green transport

Green transport is a category of sustainable transport which uses human power, animal power and renewable energy. In common usage public transport is considered a green transport option in comparison with private vehicles, as is car pooling. But some people prefer a definition that does not include public transport or vehicle movements which relies on non-renewable energy.

Green transport includes:

* walking
* cycling and some other types of human-powered transport
* Green vehicles
o solar powered vehicles
o wind powered vehicles

Tuesday, April 15, 2008

H2 (DBMS)

A subset of the SQL (Structured Query Language) standard is supported. The main programming APIs are SQL and JDBC, however the database also supports using the PostgreSQL ODBC driver by acting like a PostgreSQL server.

It is possible to create both in-memory tables, as well as disk-based tables. Tables can be persistent or temporary. Index types are hash table and tree for in-memory tables, and b-tree for disk-based tables. All data manipulation operations are transactional. Table level locking and multiversion concurrency control are implemented. The 2-phase commit protocol is supported as well, but no standard API for distributed transactions is implemented.

Tuesday, April 08, 2008

Rapid application development

Rapid application development (RAD), is a software development process developed initially by James Martin in 1991. The methodology involves iterative development, and the construction of prototypes. Traditionally the rapid application development approach involves compromises in usability, features, and/or execution speed. It is described as a process through which the development cycle of an application is expedited. Rapid Application Development thus enables quality products to be developed faster, saving valuable resources

Friday, April 04, 2008

Database normalization

Database normalization, sometimes referred to as canonical synthesis, is a technique for designing relational database tables to minimize duplication of information and, in so doing, to safeguard the database against certain types of logical or structural problems, namely data anomalies. For example, when multiple instances of a given piece of information occur in a table, the possibility exists that these instances will not be kept consistent when the data within the table is updated, leading to a loss of data integrity. A table that is sufficiently normalized is less vulnerable to problems of this kind, because its structure reflects the basic assumptions for when multiple instances of the same information should be represented by a single instance only.
heaven42: April 2008

Tuesday, April 29, 2008

Norse colonization of the Americas

Norse sailors, often referred to as Vikings, explored and settled areas of the North Atlantic, including the northeast fringes of North America, beginning in the 10th century. While this settlement process did not have the lasting effects that later settlements and conquests would have, it can be seen as a prelude to wide-scale European settlement in the Americas.

The Viking activities are often erroneously described as the Viking colonization of North America, but there are few findings to support the idea that the Vikings colonized North America, except for Greenland which they occupied for almost 500 years (see below). Outside Greenland, though, the Viking settlements only grew to a small size and never fully developed into permanent colonies, partly because of hostile relations with Native Americans, whom the Norse referred to as Skrælings. In turn, the Viking exploited the natural resources such as furs and lumber. Lumber, in particular, was in short supply in Norse Greenland, due to deforestation.

Tuesday, April 22, 2008

Green transport

Green transport is a category of sustainable transport which uses human power, animal power and renewable energy. In common usage public transport is considered a green transport option in comparison with private vehicles, as is car pooling. But some people prefer a definition that does not include public transport or vehicle movements which relies on non-renewable energy.

Green transport includes:

* walking
* cycling and some other types of human-powered transport
* Green vehicles
o solar powered vehicles
o wind powered vehicles

Tuesday, April 15, 2008

H2 (DBMS)

A subset of the SQL (Structured Query Language) standard is supported. The main programming APIs are SQL and JDBC, however the database also supports using the PostgreSQL ODBC driver by acting like a PostgreSQL server.

It is possible to create both in-memory tables, as well as disk-based tables. Tables can be persistent or temporary. Index types are hash table and tree for in-memory tables, and b-tree for disk-based tables. All data manipulation operations are transactional. Table level locking and multiversion concurrency control are implemented. The 2-phase commit protocol is supported as well, but no standard API for distributed transactions is implemented.

Tuesday, April 08, 2008

Rapid application development

Rapid application development (RAD), is a software development process developed initially by James Martin in 1991. The methodology involves iterative development, and the construction of prototypes. Traditionally the rapid application development approach involves compromises in usability, features, and/or execution speed. It is described as a process through which the development cycle of an application is expedited. Rapid Application Development thus enables quality products to be developed faster, saving valuable resources

Friday, April 04, 2008

Database normalization

Database normalization, sometimes referred to as canonical synthesis, is a technique for designing relational database tables to minimize duplication of information and, in so doing, to safeguard the database against certain types of logical or structural problems, namely data anomalies. For example, when multiple instances of a given piece of information occur in a table, the possibility exists that these instances will not be kept consistent when the data within the table is updated, leading to a loss of data integrity. A table that is sufficiently normalized is less vulnerable to problems of this kind, because its structure reflects the basic assumptions for when multiple instances of the same information should be represented by a single instance only.
heaven42: April 2008

Tuesday, April 29, 2008

Norse colonization of the Americas

Norse sailors, often referred to as Vikings, explored and settled areas of the North Atlantic, including the northeast fringes of North America, beginning in the 10th century. While this settlement process did not have the lasting effects that later settlements and conquests would have, it can be seen as a prelude to wide-scale European settlement in the Americas.

The Viking activities are often erroneously described as the Viking colonization of North America, but there are few findings to support the idea that the Vikings colonized North America, except for Greenland which they occupied for almost 500 years (see below). Outside Greenland, though, the Viking settlements only grew to a small size and never fully developed into permanent colonies, partly because of hostile relations with Native Americans, whom the Norse referred to as Skrælings. In turn, the Viking exploited the natural resources such as furs and lumber. Lumber, in particular, was in short supply in Norse Greenland, due to deforestation.

Tuesday, April 22, 2008

Green transport

Green transport is a category of sustainable transport which uses human power, animal power and renewable energy. In common usage public transport is considered a green transport option in comparison with private vehicles, as is car pooling. But some people prefer a definition that does not include public transport or vehicle movements which relies on non-renewable energy.

Green transport includes:

* walking
* cycling and some other types of human-powered transport
* Green vehicles
o solar powered vehicles
o wind powered vehicles

Tuesday, April 15, 2008

H2 (DBMS)

A subset of the SQL (Structured Query Language) standard is supported. The main programming APIs are SQL and JDBC, however the database also supports using the PostgreSQL ODBC driver by acting like a PostgreSQL server.

It is possible to create both in-memory tables, as well as disk-based tables. Tables can be persistent or temporary. Index types are hash table and tree for in-memory tables, and b-tree for disk-based tables. All data manipulation operations are transactional. Table level locking and multiversion concurrency control are implemented. The 2-phase commit protocol is supported as well, but no standard API for distributed transactions is implemented.

Tuesday, April 08, 2008

Rapid application development

Rapid application development (RAD), is a software development process developed initially by James Martin in 1991. The methodology involves iterative development, and the construction of prototypes. Traditionally the rapid application development approach involves compromises in usability, features, and/or execution speed. It is described as a process through which the development cycle of an application is expedited. Rapid Application Development thus enables quality products to be developed faster, saving valuable resources

Friday, April 04, 2008

Database normalization

Database normalization, sometimes referred to as canonical synthesis, is a technique for designing relational database tables to minimize duplication of information and, in so doing, to safeguard the database against certain types of logical or structural problems, namely data anomalies. For example, when multiple instances of a given piece of information occur in a table, the possibility exists that these instances will not be kept consistent when the data within the table is updated, leading to a loss of data integrity. A table that is sufficiently normalized is less vulnerable to problems of this kind, because its structure reflects the basic assumptions for when multiple instances of the same information should be represented by a single instance only.
heaven42: April 2008

Tuesday, April 29, 2008

Norse colonization of the Americas

Norse sailors, often referred to as Vikings, explored and settled areas of the North Atlantic, including the northeast fringes of North America, beginning in the 10th century. While this settlement process did not have the lasting effects that later settlements and conquests would have, it can be seen as a prelude to wide-scale European settlement in the Americas.

The Viking activities are often erroneously described as the Viking colonization of North America, but there are few findings to support the idea that the Vikings colonized North America, except for Greenland which they occupied for almost 500 years (see below). Outside Greenland, though, the Viking settlements only grew to a small size and never fully developed into permanent colonies, partly because of hostile relations with Native Americans, whom the Norse referred to as Skrælings. In turn, the Viking exploited the natural resources such as furs and lumber. Lumber, in particular, was in short supply in Norse Greenland, due to deforestation.

Tuesday, April 22, 2008

Green transport

Green transport is a category of sustainable transport which uses human power, animal power and renewable energy. In common usage public transport is considered a green transport option in comparison with private vehicles, as is car pooling. But some people prefer a definition that does not include public transport or vehicle movements which relies on non-renewable energy.

Green transport includes:

* walking
* cycling and some other types of human-powered transport
* Green vehicles
o solar powered vehicles
o wind powered vehicles

Tuesday, April 15, 2008

H2 (DBMS)

A subset of the SQL (Structured Query Language) standard is supported. The main programming APIs are SQL and JDBC, however the database also supports using the PostgreSQL ODBC driver by acting like a PostgreSQL server.

It is possible to create both in-memory tables, as well as disk-based tables. Tables can be persistent or temporary. Index types are hash table and tree for in-memory tables, and b-tree for disk-based tables. All data manipulation operations are transactional. Table level locking and multiversion concurrency control are implemented. The 2-phase commit protocol is supported as well, but no standard API for distributed transactions is implemented.

Tuesday, April 08, 2008

Rapid application development

Rapid application development (RAD), is a software development process developed initially by James Martin in 1991. The methodology involves iterative development, and the construction of prototypes. Traditionally the rapid application development approach involves compromises in usability, features, and/or execution speed. It is described as a process through which the development cycle of an application is expedited. Rapid Application Development thus enables quality products to be developed faster, saving valuable resources

Friday, April 04, 2008

Database normalization

Database normalization, sometimes referred to as canonical synthesis, is a technique for designing relational database tables to minimize duplication of information and, in so doing, to safeguard the database against certain types of logical or structural problems, namely data anomalies. For example, when multiple instances of a given piece of information occur in a table, the possibility exists that these instances will not be kept consistent when the data within the table is updated, leading to a loss of data integrity. A table that is sufficiently normalized is less vulnerable to problems of this kind, because its structure reflects the basic assumptions for when multiple instances of the same information should be represented by a single instance only.
heaven42: April 2008

Tuesday, April 29, 2008

Norse colonization of the Americas

Norse sailors, often referred to as Vikings, explored and settled areas of the North Atlantic, including the northeast fringes of North America, beginning in the 10th century. While this settlement process did not have the lasting effects that later settlements and conquests would have, it can be seen as a prelude to wide-scale European settlement in the Americas.

The Viking activities are often erroneously described as the Viking colonization of North America, but there are few findings to support the idea that the Vikings colonized North America, except for Greenland which they occupied for almost 500 years (see below). Outside Greenland, though, the Viking settlements only grew to a small size and never fully developed into permanent colonies, partly because of hostile relations with Native Americans, whom the Norse referred to as Skrælings. In turn, the Viking exploited the natural resources such as furs and lumber. Lumber, in particular, was in short supply in Norse Greenland, due to deforestation.

Tuesday, April 22, 2008

Green transport

Green transport is a category of sustainable transport which uses human power, animal power and renewable energy. In common usage public transport is considered a green transport option in comparison with private vehicles, as is car pooling. But some people prefer a definition that does not include public transport or vehicle movements which relies on non-renewable energy.

Green transport includes:

* walking
* cycling and some other types of human-powered transport
* Green vehicles
o solar powered vehicles
o wind powered vehicles

Tuesday, April 15, 2008

H2 (DBMS)

A subset of the SQL (Structured Query Language) standard is supported. The main programming APIs are SQL and JDBC, however the database also supports using the PostgreSQL ODBC driver by acting like a PostgreSQL server.

It is possible to create both in-memory tables, as well as disk-based tables. Tables can be persistent or temporary. Index types are hash table and tree for in-memory tables, and b-tree for disk-based tables. All data manipulation operations are transactional. Table level locking and multiversion concurrency control are implemented. The 2-phase commit protocol is supported as well, but no standard API for distributed transactions is implemented.

Tuesday, April 08, 2008

Rapid application development

Rapid application development (RAD), is a software development process developed initially by James Martin in 1991. The methodology involves iterative development, and the construction of prototypes. Traditionally the rapid application development approach involves compromises in usability, features, and/or execution speed. It is described as a process through which the development cycle of an application is expedited. Rapid Application Development thus enables quality products to be developed faster, saving valuable resources

Friday, April 04, 2008

Database normalization

Database normalization, sometimes referred to as canonical synthesis, is a technique for designing relational database tables to minimize duplication of information and, in so doing, to safeguard the database against certain types of logical or structural problems, namely data anomalies. For example, when multiple instances of a given piece of information occur in a table, the possibility exists that these instances will not be kept consistent when the data within the table is updated, leading to a loss of data integrity. A table that is sufficiently normalized is less vulnerable to problems of this kind, because its structure reflects the basic assumptions for when multiple instances of the same information should be represented by a single instance only.
heaven42: April 2008

Tuesday, April 29, 2008

Norse colonization of the Americas

Norse sailors, often referred to as Vikings, explored and settled areas of the North Atlantic, including the northeast fringes of North America, beginning in the 10th century. While this settlement process did not have the lasting effects that later settlements and conquests would have, it can be seen as a prelude to wide-scale European settlement in the Americas.

The Viking activities are often erroneously described as the Viking colonization of North America, but there are few findings to support the idea that the Vikings colonized North America, except for Greenland which they occupied for almost 500 years (see below). Outside Greenland, though, the Viking settlements only grew to a small size and never fully developed into permanent colonies, partly because of hostile relations with Native Americans, whom the Norse referred to as Skrælings. In turn, the Viking exploited the natural resources such as furs and lumber. Lumber, in particular, was in short supply in Norse Greenland, due to deforestation.

Tuesday, April 22, 2008

Green transport

Green transport is a category of sustainable transport which uses human power, animal power and renewable energy. In common usage public transport is considered a green transport option in comparison with private vehicles, as is car pooling. But some people prefer a definition that does not include public transport or vehicle movements which relies on non-renewable energy.

Green transport includes:

* walking
* cycling and some other types of human-powered transport
* Green vehicles
o solar powered vehicles
o wind powered vehicles

Tuesday, April 15, 2008

H2 (DBMS)

A subset of the SQL (Structured Query Language) standard is supported. The main programming APIs are SQL and JDBC, however the database also supports using the PostgreSQL ODBC driver by acting like a PostgreSQL server.

It is possible to create both in-memory tables, as well as disk-based tables. Tables can be persistent or temporary. Index types are hash table and tree for in-memory tables, and b-tree for disk-based tables. All data manipulation operations are transactional. Table level locking and multiversion concurrency control are implemented. The 2-phase commit protocol is supported as well, but no standard API for distributed transactions is implemented.

Tuesday, April 08, 2008

Rapid application development

Rapid application development (RAD), is a software development process developed initially by James Martin in 1991. The methodology involves iterative development, and the construction of prototypes. Traditionally the rapid application development approach involves compromises in usability, features, and/or execution speed. It is described as a process through which the development cycle of an application is expedited. Rapid Application Development thus enables quality products to be developed faster, saving valuable resources

Friday, April 04, 2008

Database normalization

Database normalization, sometimes referred to as canonical synthesis, is a technique for designing relational database tables to minimize duplication of information and, in so doing, to safeguard the database against certain types of logical or structural problems, namely data anomalies. For example, when multiple instances of a given piece of information occur in a table, the possibility exists that these instances will not be kept consistent when the data within the table is updated, leading to a loss of data integrity. A table that is sufficiently normalized is less vulnerable to problems of this kind, because its structure reflects the basic assumptions for when multiple instances of the same information should be represented by a single instance only.
heaven42: April 2008

Tuesday, April 29, 2008

Norse colonization of the Americas

Norse sailors, often referred to as Vikings, explored and settled areas of the North Atlantic, including the northeast fringes of North America, beginning in the 10th century. While this settlement process did not have the lasting effects that later settlements and conquests would have, it can be seen as a prelude to wide-scale European settlement in the Americas.

The Viking activities are often erroneously described as the Viking colonization of North America, but there are few findings to support the idea that the Vikings colonized North America, except for Greenland which they occupied for almost 500 years (see below). Outside Greenland, though, the Viking settlements only grew to a small size and never fully developed into permanent colonies, partly because of hostile relations with Native Americans, whom the Norse referred to as Skrælings. In turn, the Viking exploited the natural resources such as furs and lumber. Lumber, in particular, was in short supply in Norse Greenland, due to deforestation.

Tuesday, April 22, 2008

Green transport

Green transport is a category of sustainable transport which uses human power, animal power and renewable energy. In common usage public transport is considered a green transport option in comparison with private vehicles, as is car pooling. But some people prefer a definition that does not include public transport or vehicle movements which relies on non-renewable energy.

Green transport includes:

* walking
* cycling and some other types of human-powered transport
* Green vehicles
o solar powered vehicles
o wind powered vehicles

Tuesday, April 15, 2008

H2 (DBMS)

A subset of the SQL (Structured Query Language) standard is supported. The main programming APIs are SQL and JDBC, however the database also supports using the PostgreSQL ODBC driver by acting like a PostgreSQL server.

It is possible to create both in-memory tables, as well as disk-based tables. Tables can be persistent or temporary. Index types are hash table and tree for in-memory tables, and b-tree for disk-based tables. All data manipulation operations are transactional. Table level locking and multiversion concurrency control are implemented. The 2-phase commit protocol is supported as well, but no standard API for distributed transactions is implemented.

Tuesday, April 08, 2008

Rapid application development

Rapid application development (RAD), is a software development process developed initially by James Martin in 1991. The methodology involves iterative development, and the construction of prototypes. Traditionally the rapid application development approach involves compromises in usability, features, and/or execution speed. It is described as a process through which the development cycle of an application is expedited. Rapid Application Development thus enables quality products to be developed faster, saving valuable resources

Friday, April 04, 2008

Database normalization

Database normalization, sometimes referred to as canonical synthesis, is a technique for designing relational database tables to minimize duplication of information and, in so doing, to safeguard the database against certain types of logical or structural problems, namely data anomalies. For example, when multiple instances of a given piece of information occur in a table, the possibility exists that these instances will not be kept consistent when the data within the table is updated, leading to a loss of data integrity. A table that is sufficiently normalized is less vulnerable to problems of this kind, because its structure reflects the basic assumptions for when multiple instances of the same information should be represented by a single instance only.