Which of the following is a PL SQL collection types?

PL/SQL has three collection types—associative array, VARRAY (variable-size array), and nested table.

How many types of PL SQL are there?

PL/SQL has two kinds of data types: scalar and composite. The scalar types are types that store single values such as number, Boolean, character, and datetime whereas the composite types are types that store multiple values, for example, record and collection.

What is type in PL SQL?

The %TYPE attribute lets use the datatype of a field, record, nested table, database column, or variable in your own declarations, rather than hardcoding the type names. You can use the %TYPE attribute as a datatype specifier when declaring constants, variables, fields, and parameters.

What are the PL SQL built in collection methods?

You can use the methods EXISTS , COUNT , LIMIT , FIRST , LAST , PRIOR , NEXT , EXTEND , TRIM , and DELETE to manage collections whose size is unknown or varies. EXISTS , COUNT , LIMIT , FIRST , LAST , PRIOR , and NEXT are functions that check the properties of a collection or individual collection elements.

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What is PL collection?

A Collection is an ordered group of elements of particular data types. It can be a collection of simple data type or complex data type (like user-defined or record types). … Collections are most useful things when a large data of the same type need to be processed or manipulated.

What are the different types of composite data types in PL SQL?

PL/SQL composite data types

  • Associative array (index-by table)
  • Nested table.
  • Varray.
  • Record.

What are the SQL data types?

Data types in SQL Server are organized into the following categories:

  • Exact numerics. Unicode character strings.
  • Approximate numerics. Binary strings.
  • Date and time. Other data types.
  • Character strings.
  • bigint. numeric.
  • bit. smallint.
  • decimal. smallmoney.
  • int. tinyint.

Which of the following is true about PL SQL?

Answer : B. Q 8 – Which of the following is true about comments in PL/SQL? … C – The PL/SQL single-line comments start with the delimiter — (double hyphen) and multi-line comments are enclosed by /* and */. D – All of the above.

What is type used for in Oracle?

Oracle Built-In Datatypes. A datatype associates a fixed set of properties with the values that can be used in a column of a table or in an argument of a procedure or function.

What is type in Oracle with example?

For example, an object type can represent a student, bank account, computer screen, rational number, or data structure such as a queue, stack, or list. Currently, you cannot define object types in a PL/SQL block, subprogram, or package. You can define them interactively in SQL*Plus using the SQL statement CREATE TYPE .

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What are the different types of collections in Oracle?

PL/SQL has three collection types—associative array, VARRAY (variable-size array), and nested table.

Is PL SQL record a collection type?

PL/SQL Records

A record is a collection of data objects that are kept in fields, each having its own name and datatype. … You can declare a PL/SQL record that resembles a row in a database table without listing all the columns using the % ROWTYPE attribute.

What is collection method?

Data collection is a process of collecting information from all the relevant sources to find answers to the research problem, test the hypothesis and evaluate the outcomes. Data collection methods can be divided into two categories: secondary methods of data collection and primary methods of data collection.

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