In this tutorial, First, we would be discussing what is constraints and their types, and secondly, about the Oracle triggers and the usages before we could see the major difference between constraints and triggers. CONSTRAINTS: In Oracle, the constraints are ...
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PL/SQL Character Set
A PL/SQL program is a sequence of statements, contains multiple lines of text. The types of characters available depend on the database character set you’re using. To know your current Oracle Database character set, run the following SQL statement: Get ...
Oracle PL/SQL: Check if record exists
Below are the examples to check if a record exists using PL/SQL in Oracle. Check if record exists using the Count() function The following Oracle PL/SQL block will use the count() function in implicit cursor to count the records for ...