In chapter 5, we discussed extensively about structured query language (SQL) standards presented in 1992. This standard was commonly referred to as SQL2 or SQL-92. Later, on the ANSI and ISO SQL standardization added the features to the SQL specification in 1999 to support object-oriented data management. The SQL: 1999 is often referred to as SQL3 standard. SQL3 supports many of the complex data types as shown in Table 16.1. SQL3, in addition to relational query facilities, also supports for object technology. The SQL3 standard includes the following parts:
New parts addressing temporal and transaction aspects of SQL.
SQL/Call level interface (CLI). ...