May 2012
Intermediate to advanced
440 pages
9h 1m
English
Content preview from Oracle Advanced PL/SQL Developer Professional GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Collections—a comparative study
In this section, we will compare the available collection types and also throw light on the considerable points to select the appropriate collection type in the database.
Common characteristics of collection types
All three forms of collection types oblige to certain characteristics under all situations. Let us check out some of the common properties of collection types:
- Persistent collection types can be passed as a formal argument to database stored subprograms. Local collection types and non-persistent collection types can be used for local subprograms only.
- Collection types can be used as a
RETURNtype of a function. - Due to the object-oriented behavior of persistent collection types—nested tables and varrays—the ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.