Which collection is good for collecting information whose volume is unknown?
Similarly, you may ask, what are Oracle collections used for?
A collection can be loosely defined as a group of ordered elements, all of the same type, that allows programmatic access to its elements through an index. Commonly used collection types used in the programming world include arrays, maps, and lists. Storing elements in a collection can provide a number of advantages.
Also, what is the difference between record and collection in Oracle? In a collection, the internal components always have the same data type, and are called elements. To create a collection variable, you either define a collection type and then create a variable of that type or use %TYPE . In a record, the internal components can have different data types, and are called fields.
Thereof, what is PL SQL collections?
PL/SQL Collections. A collection is an ordered group of elements, all of the same type. It is a general concept that encompasses lists, arrays, and other data types used in classic programming algorithms. Each element is addressed by a unique subscript. These are similar to hash tables in other programming languages.
Which collection exception is raised when a subscript exceeds the number of elements in a collection?
|Collection Exception||Raised in Situations|
|NO_DATA_FOUND||A subscript designates an element that was deleted, or a nonexistent element of an associative array.|
|SUBSCRIPT_BEYOND_COUNT||A subscript exceeds the number of elements in a collection.|
|SUBSCRIPT_OUTSIDE_LIMIT||A subscript is outside the allowed range.|