Data Base Practice Questions
21. The number of BLOB column allowed in Oracle table is
22. Choose the correct pattern Matching sign for matching a single character
23. The correct syntax of DECODE stament is
24. Which operator, when used along with special operators, reverts their output?
25. Which lock allows multiple users to see the data but not change it
26. A procedure which return a value is called as
27. Data stored in the curser is called as _______
28. In which areas of PL/SQL block must code be placed in order to handle Oracle-defined exceptions?
29. Which procedure can be used to create a customised error message
30. procedure and functions are explicitely executed.This is different from database trigger.When is a database trigger executed
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