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What is a user-defined operator?

April 26, 2017operator User-defined

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What is a user-defined operator?

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Oracle allows developers of object-oriented applications to extend the list of built-in relational operators (for example, +, -, /, *, LIKE) with domain specific operators (for example, Contains, Within_Distance, Similar) called user-defined operators. A user-defined operator can be used anywhere built-in operators can be used, for example, in the select list or the where clause. Similar to built-in operators, a user-defined operator may support arguments of different types, and that it may be evaluated using an index.