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DB2 Optimizer is used to process the SQL statement. DB2 Optimizer can be used to enhance the performance of SQL. The DB2 Optimizer is a crucial component of IBM’s DB2 relational database management system. Its primary purpose is to enhance the performance of SQL queries by determining the most efficient way to execute them. Here … Read more

S9(4)COMP is the picture clause of a null indicator variable. In IBM DB2, the Null Indicator variable is commonly associated with host variables in programming languages like COBOL when working with SQL. The Null Indicator variable is used to indicate whether a column in a result set contains a NULL value. In COBOL, the PICTURE … Read more

The data types available in DB2 are: SMALLINT INTEGER FLOAT DECIMAL CHAR VARCHAR DATE TIME DB2, a relational database management system (RDBMS) developed by IBM, supports various data types. The specific data types available in DB2 can vary depending on the version and edition of DB2 you are using. However, as of my last knowledge … Read more

COMMIT is used to change the data permanently by commits the database changes occur in the current transaction and made that changes permanent. In DB2, the COMMIT statement is used to permanently save any changes made during the current transaction. When you issue a COMMIT, it finalizes the changes made by the SQL statements within … Read more

Three types of page locks can be held in DB2: Exclusive Update Share In IBM DB2, there are two main types of page locks: Intent Page Locks (IPLs): These locks are acquired on a page to indicate the intent of a transaction to acquire locks on lower-level resources, such as row or table locks. Intent … Read more