From CASRAI dictionary
|Extended definition||n/a +|
|Meta title||csr:Relational database +|
|Original source||http://searchsqlserver.techtarget.com/definition/relational-database +|
|Research Data Domain||true +|
A collection of data items organized as a …
A collection of data items organized as a set of formally-described tables from which data can be accessed or reassembled in many different ways without having to reorganize the database tables. The standard user and application program interface to a relational database is the structured query language (SQL). SQL statements are used both for interactive queries for information from a relational database and for gathering data for reports. In addition to being relatively easy to create and access, a relational database has the important advantage of being easy to extend. After the original database creation, a new data category can be added without requiring that all existing applications be modified. A relational database is a set of tables containing data fitted into predefined categories. Each table (which is sometimes called a relation) contains one or more data categories in columns. Each row contains a unique instance of data for the categories defined by the columns. For example, a typical business order entry database would include a table that described a customer with columns for name, address, phone number, and so forth. Another table would describe an order: product, customer, date, sales price, and so forth. A user of the database could obtain a view of the database that fitted the user's needs. For example, a branch office manager might like a view or report on all customers that had bought products after a certain date. A financial services manager in the same company could, from the same tables, obtain a report on accounts that needed to be paid. When creating a relational database, the domain of possible values in a data column can be defined as well as further constraints that may apply to that data value. For example, a domain of possible customers could allow up to ten possible customer names but be constrained in one table to allowing only three of these customer names to be specifiable.of these customer names to be specifiable. +
"Has query" is a predefined property that represents meta information (in form of a subobject) about individual queries.
|Relational database + , Relational database + , Relational database + , Relational database + , Relational database +|
|Categories||Terms , Drafts , Research Data Domain|
This property is a special property in this wiki.
|12 August 2015 06:46:25 +|
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