PL/SQL is
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Oracle's procedural language for SQL application development
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support stored procedures, database triggers, optimized concurrent data access, and executable programs as meta-data (i.e., programs are stored together with and attached to the data objects to be manipulated on)
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a database programming language with expressive capability between C and SQL: loops, decisions, modules and function calls, subroutines, etc.
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database server is both a SQL engine and a compute engine
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programmable HTML pages
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