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The structured query language (SQL) is the language used to query and manipulate information within a SQL Server database. SQL is actually an ISO and ANSI standardised language. However, a lot of RDBMS software use their own proprietary extensions within their own Transact-SQL (T-SQL) variant of SQL. The basic building block of the structured query [...] Relational databases are probably the most common type of database used for general-purpose tasks. In a relational database, information is grouped according to its type, generally in tables (see below). For example, in a database designed to hold fleet information you may include a table of employees and a table of vehicles. – In addition [...] A temporal database is a database with built-in time aspects, e.g. a temporal data model and a temporal version of structured query language. More specifically the temporal aspects usually include valid-time and transaction-time. These attributes go together to form bitemporal data. * Valid time denotes the time period during which a fact is true with [...] Deductive Object Oriented databases (DOODs) came about through the integration of the OO paradigm and logic programming. The following broad approaches have been adopted in the design of DOOD systems: – Language Extension : An existing deductive language model is extended with object oriented features. For example, Datalog is extended to support identity, inheritance, and [...] |
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