PL/SQL is Oracle’s procedural language extension to SQL. PL/SQL allows you to mix SQL statements with procedural constructs. PL/SQL provides the capability to define and execute PL/SQL program units such as procedures, functions, and packages.
What type of language is PL SQL?
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 can execute a number of queries in one block using single command.
What is procedural language in SQL?
The SQL Procedural Language (SQL PL) is a language extension of SQL that consists of statements and language elements that can be used to implement procedural logic in SQL statements.
What is a PL SQL procedure?
A PL/SQL procedure is a reusable unit that encapsulates specific business logic of the application. Technically speaking, a PL/SQL procedure is a named block stored as a schema object in the Oracle Database.
Why a procedural language like PL SQL is needed?
In Oracle database management, PL/SQL is a procedural language extension to Structured Query Language (SQL). … Because PL/SQL enables users to mix SQL statements with procedural constructs, it is possible to use PL/SQL blocks and subprograms to group SQL statements before sending them to Oracle for execution.
What is difference between SQL and Plsql?
There are many differences between SQL and PL/SQL. SQL is a non-procedural language that executes a single query at a time whereas, PL/SQL is a procedural language and executes blocks of code at once which helps reduce traffic and increases processing speed.
What is the difference between MySQL and Plsql?
The MySQL software delivers a very fast, multi-threaded, multi-user, and robust SQL (Structured Query Language) database server. … On the other hand, Oracle PL/SQL is detailed as “It is a combination of SQL along with the procedural features of programming languages”.
Is PL SQL and PostgreSQL same?
PL/pgSQL is similar to PL/SQL in many aspects. It is a block-structured, imperative language, and all variables have to be declared. … The main differences you should keep in mind when porting from PL/SQL to PL/pgSQL are: There are no default values for parameters in PostgreSQL.
Which are procedural languages?
A procedural language is a computer programming language that follows, in order, a set of commands. Examples of computer procedural languages are BASIC, C, FORTRAN, Java, and Pascal. Procedural languages are some of the common types of programming languages used by script and software programmers.
What is PL SQL Mcq?
PL/SQL stands for “Procedural Language Extension of SQL”. PL/SQL uses a block-structured syntax. Each of the logical blocks of PL/SQL can be nested into any number of subblocks.
What is the difference between PL SQL procedure and function?
What is difference between procedure and function :
|Procedures will not return the value||Functions must return the value. When you are writing functions make sure that you can write the return statement.|
|Procedures always executes as PL SQL statement||Functions executes as part of expression|
What is the difference between PL SQL function and PL SQL procedure?
The difference is- A function must return a value (of any type) by default definition of it, whereas in case of a procedure you need to use parameters like OUT or IN OUT parameters to get the results. You can use a function in a normal SQL where as you cannot use a procedure in SQL statements.
How many types of procedures are there in PL SQL?
PL/SQL has two types of subprograms called procedures and functions. Generally, you use a procedure to perform an action and a function to compute a value. Like unnamed or anonymous PL/SQL blocks, subprograms have a declarative part, an executable part, and an optional exception-handling part.
Is SQL procedural or non procedural?
Structured Query Language (SQL)
SQL is a non-procedural language; users describe in SQL what they want done, and the SQL language compiler automatically generates a procedure to navigate the database and perform the desired task.
Is PL SQL only for Oracle?
The PL/SQL engine can only be installed in an Oracle Database server or an application development tool such as Oracle Forms.
Is SQL declarative or procedural?
Some well-known general declarative programming languages include Ruby, R and Haskell. SQL (Structured Query Language) is a declarative query language and is the industry standard for relational databases.