What is PL collection?

In this chapter, we will discuss the Collections in PL/SQL. A collection is an ordered group of elements having the same data type. Each element is identified by a unique subscript that represents its position in the collection. PL/SQL provides three collection types − Index-by tables or Associative array.

What is Plsql table?

Objects of type TABLE are called PL/SQL tables, which are modeled as (but not the same as) database tables. Like an array, a PL/SQL table is an ordered collection of elements of the same type. Each element has a unique index number that determines its position in the ordered collection.

What are Oracle collection types?

5.1 Collection Data Types. Oracle supports the varray and nested table collection data types. A varray is an ordered collection of elements. A nested table can have any number of elements and is unordered.

What is record type in PL SQL?

A record type is a composite data type that consists of one or more identifiers and their corresponding data types. You can create user-defined record types by using the TYPE IS RECORD statement within a package or by using the CREATE TYPE (Object) statement.

What is exception in PL SQL?

In PL/SQL, a warning or error condition is called an exception. When an error occurs, an exception is raised. That is, normal execution stops and control transfers to the exception-handling part of your PL/SQL block or subprogram. Internal exceptions are raised implicitly (automatically) by the run-time system.

What is PL SQL table why it is used?

Why Use PL/SQL Tables? PL/SQL tables help you move bulk data. They can store columns or rows of Oracle data, and they can be passed as parameters. So, PL/SQL tables make it easy to move collections of data into and out of database tables or between client-side applications and stored subprograms.