Types of composite data type

Explain the types of composite data type.

Following are the types of composite data types:

RECORD - PL/SQL records are similar to C structures. A record provides with a way to deal with separate but related variables as a unit.

TABLE - They are similar to arrays in C. However, they are implemented differently.

In order to declare a PL/SQL table, you need to first define a table type, then you declare a variable of this type
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Statement below
I copied the following statement from your site, "In order to declare a PL/SQL table, you need to first define a table type, then you declare a variable of this type".
I thought the declare comes before the define but you are saying the define comes before the declare. Which is right? I am a little confused. Please expand, thank you.
George A. Agbanrin 03-3-2015