Quick Answer: Where do we use PL SQL?

What are applications of PL SQL?

Delivering Web content with PL/SQL stored procedures provides the power and flexibility of database processing. For example, you can use DML, dynamic SQL, and cursors. You also eliminate the process overhead of forking a new CGI process to handle each HTTP request.

What is the use of an index PL SQL?

What is an Index in Oracle? An index is a performance-tuning method of allowing faster retrieval of records. An index creates an entry for each value that appears in the indexed columns.

What is the requirement to use PL SQL?

System requirements

x, 8i, 9i, 10g, 11g, 12c, 18c and 19c on any platform. To connect to an Oracle database, the 32 bit PL/SQL Developer version requires a 32 bit Oracle Client and the 64 bit PL/SQL Developer version requires a 64 bit Oracle Client.

Is PL SQL needed?

3 Answers. PL/SQL is useful when you have the opportunity to process large chunks of data on the database side with out having to load all that data in your application. Lets say you are running complex reports on millions of rows of data. … It’s up to the developer to decide when is a best time to use PL/SQL.

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Which is better SQL or PL SQL?

PL/SQL stands for “Procedural language extensions to SQL.” PL/SQL is a database-oriented programming language that extends SQL with procedural capabilities.

Comparisons of SQL and PLSQL:

SQL PLSQL
It directly interacts with the database server. It does not interacts directly with the database server.

Is primary key an index?

The primary key is a special unique index. Only one primary key index can be defined in a table. The primary key is used to uniquely identify a record and is created using the keyword PRIMARY KEY. Indexes can cover multiple data columns, such as index like INDEX (columnA, columnB), which is a joint index.

Which is faster sorting or indexing?

Sorting might be a better choice for investigative work because it outputs a new table that can serve as the basis for subsequent analysis.

Benefits and drawbacks of sorting and indexing.

Sorting Indexing
Searching character fields Slower Faster

Why indexing is used in database?

Why Indexing is used in database? Answer: An index is a schema object that contains an entry for each value that appears in the indexed column(s) of the table or cluster and provides direct, fast access to rows. The users cannot see the indexes, they are just used to speed up searches/queries.

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.

What are the different ways in which PL SQL can run?

You can run a procedure or function interactively by: Using an Oracle tool, such as SQL*Plus. Calling it explicitly in the code of a database application, such as an Oracle Forms or precompiler application. Calling it explicitly in the code of another procedure or trigger.

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Is PL SQL different from SQL?

The basic difference between two languages is that SQL executes the single query at a time whereas, Pl/SQL executes the block of code at once. SQL is a Structured Query Language whereas, PL/SQL is a Procedural Language/ Structured Query Language. … You can embed SQL queries within the syntax of PL/SQL.

Can we write PL SQL MySQL?

While MySQL does have similar components, no, you cannot use PLSQL in MySQL. The same goes for T-SQL used by MS SQL Server. MySQL has plenty of documentation on it at their website.

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