Updating sql database
When you declare an associative array that is indexed by strings, the string type in the declaration must be When you pass an associative array as a parameter to a remote database using a database link, the two databases can have different globalization settings.
When the remote database uses a collection method such as , it uses its own character order, which might be different from the order where the collection originated.
Nested tables are a good choice when: Nested table data is stored in a separate store table, a system-generated database table.
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SQL Like a database table, an associative array holds a data set of arbitrary size, and you can access its elements without knowing their positions in the array.
An associative array does not need the disk space or network operations of a database table, but an associative array cannot be manipulated by SQL statements (such as ).
A nested table type or varray type that is created at schema level (with the CREATE TYPE Statement) is stored in the database, and you can manipulate it with SQL statements.
A collection has only one dimension, but you can model a multidimensional collection by creating a collection whose elements are also collections.
You can pass composite variables to subprograms as a parameters.