Which of the following are the features of PL SQL?

What are the functions in PL SQL?

A stored function (also called a user function or user-defined function) is a set of PL/SQL statements you can call by name. Stored functions are very similar to procedures, except that a function returns a value to the environment in which it is called. User functions can be used as part of a SQL expression.

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.

What is the advantages of PL SQL?

PL/SQL allows sending an entire block of statements to the database at one time. This reduces network traffic and provides high performance for the applications. PL/SQL gives high productivity to programmers as it can query, transform, and update data in a database.

What are advantages and disadvantages of PL SQL?

Advantage of Using PL/SQL

  • Better performance, as SQL is executed in bulk rather than a single statement.
  • High Productivity.
  • Tight integration with SQL.
  • Full Portability.
  • Tight Security.
  • Support Object Oriented Programming concepts.

What is PL SQL explain with example?

PL/SQL is basically a procedural language, which provides the functionality of decision making, iteration and many more features of procedural programming languages.

PL/SQL Introduction.

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SQL PL/SQL
Execute as a single statement. Execute as a whole block.
Mainly used to manipulate data. Mainly used to create an application.

Is Vs as in PL SQL?

Question: What is the difference between ‘IS’ and ‘AS’ in PL/SQL? Answer: The PL/SQL language evolved such the the “IS” and “AS” operators are equivalent. Functionally the “IS” and “AS” syntax performs identical functions and can be used interchangeably.

WHAT IS function and procedure in PL SQL?

“A procedures or function is a group or set of SQL and PL/SQL statements that perform a specific task.” A function and procedure is a named PL/SQL Block which is similar . The major difference between a procedure and a function is, a function must always return a value, but a procedure may or may not return a value.

What is the purpose of trigger?

Triggers are used to maintain the referential integrity of data by changing the data in a systematic fashion. Each trigger is attached to a single, specified table in the database. Triggers can be viewed as similar to stored procedures in that both consist of procedural logic that is stored at the database level.

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
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