Technical Interview Questions
Database Services component is used to execute the SQL statement. It also manages buffer pool. In IBM DB2, the component used to execute SQL statements is the SQL Processor. The SQL Processor is responsible for processing and executing SQL statements against the database. It interprets the SQL statements and interacts with other components of the … Read more
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