How does an execution block start and end in PL SQL?
A PL/SQL block has an executable section. An executable section starts with the keyword BEGIN and ends with the keyword END . The executable section must have a least one executable statement, even if it is the NULL statement which does nothing.
How can a user defined record be created in PL SQL Mcq?
How can a user defined record be created in PL/SQL?
- Using TYPE statement.
- Using %ROWTYPE.
- Using %TYPE.
- Using CREATE TYPE statement.
Which of the following is true about the execution section of a PL SQL block Mcq?
Answer : B. Q 5 – Which of the following is true about the execution section of a PL/SQL block? A – It is enclosed between the keywords BEGIN and END.
Which of the following is not a PL SQL unit Mcq?
4. ____________is not a PL/SQL unit. Table is not a PL/SQL unit.
Is declare mandatory in PL SQL?
2 Answers. Following is the syntax for creating a pl/sql procedure. Declaration of variable and cursor is on need basis and is not mandatory.
When should a close statement be used in PL SQL?
After all rows have been retrieved from the result set that is associated with a cursor, the cursor must be closed. The result set cannot be referenced after the cursor has been closed. However, the cursor can be reopened and the rows of the new result set can be fetched.
How can a PL SQL block be executed?
How to Execute PL SQL Block in Oracle
- Execute PL SQL Block in SQL Plus. In SQL Plus, just put the forward slash (/) at the end of PL SQL block and press enter to execute. …
- Execute PL SQL Block in Toad. …
- Execute PL SQL Block in SQL Developer.
What is a savepoint inside a PL SQL block used for?
The use of the SAVEPOINT command allows you to break your SQL statements into units so that in a given PL/SQL block, some units can be committed (saved to the database), others can be rolled back (undone), and so forth.
Where exceptions are used in PL SQL?
An error occurs during the program execution is called Exception in PL/SQL. PL/SQL facilitates programmers to catch such conditions using exception block in the program and an appropriate action is taken against the error condition. There are two type of exceptions: System-defined Exceptions.
Where do you declare variables in PL SQL procedures?
PL/SQL variables must be declared in the declaration section or in a package as a global variable. When you declare a variable, PL/SQL allocates memory for the variable’s value and the storage location is identified by the variable name.
What are the datatypes available in PL SQL?
Data types (PL/SQL)
|PL/SQL data type||DB2® SQL data type||Description|
|INT||INT||Signed four-byte integer numeric data|
|INTEGER||INTEGER||Signed four-byte integer numeric data|
|LONG||CLOB (32760)||Character large object data|
|LONG RAW||BLOB (32760)||Binary large object data|
How many types of literals are available in PL SQL?
We’ll cover four types of literals – text literals, integer literals, number, and date/time literals.
Which of the following is a PL SQL collection types?
PL/SQL – Collections
- Index-by tables or Associative array.
- Nested table.
- Variable-size array or Varray.