Preface
Standards development within the Information Technology sector is harmonized with international standards development. Through the CSA Technical Committee on Information Technology (TCIT), Canadians serve as the Canadian Advisory Committee (CAC) on ISO/IEC Joint Technical Committee 1 on Information Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO member body for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of the International Telecommunication Union (ITU), Canada participates in the International Telegraph and Telephone Consultative Committee (ITU-T). This Standard supersedes CAN/CSA-ISO/IEC 9075-2-04 (adoption of ISO/IEC 9075-2:2003). At the time of publication, ISO/IEC 9075-2:2008 is available from ISO and IEC in English only. CSA will publish the French version when it becomes available from ISO and IEC.
Scope
This part of ISO/IEC 9075 defines the data structures and basic operations on SQL-data. It provides functional capabilities for creating, accessing, maintaining, controlling, and protecting SQL-data. This part of ISO/IEC 9075 specifies the syntax and semantics of a database language: - For specifying and modifying the structure and the integrity constraints of SQL-data. - For declaring and invoking operations on SQL-data and cursors. - For declaring database language procedures. - For embedding SQL-statements in a compilation unit that is otherwise written in a particular programming language (host language). - For deriving an equivalent compilation unit in the host language. In that equivalent compilation unit, each embedded SQL-statement has been replaced by one or more statements in the host language, some of which invoke an SQL externally-invoked procedure that, when executed, has an effect equivalent to executing the SQL-statement. - For direct invocation of SQL-statements. - To support dynamic preparation and execution of SQL-statements.
This part of ISO/IEC 9075 provides a vehicle for portability of data definitions and compilation units between SQL-implementations. This part of ISO/IEC 9075 provides a vehicle for interconnection of SQL-implementations.
Implementations of this part of ISO/IEC 9075 may exist in environments that also support application programming languages, end-user query languages, report generator systems, data dictionary systems, program library systems, and distributed communication systems, as well as various tools for database design, data administration, and performance optimization.
