Stored procedures encapsulate SQL logic from "summary" of SQL and Relational Theory by C. Date
Stored procedures are an essential feature of SQL implementations. The basic idea is to store SQL code on the server, instead of sending it over the network from client to server each time it needs to be executed. This approach has several advantages. For example, it can improve performance by reducing network traffic. But an even more important point is that stored procedures encapsulate SQL logic. That is, they allow you to encapsulate a sequence of SQL operations behind a single name. This encapsulation has several important benefits. For one thing, it can simplify the client's job. Instead of having to issue a whole series of separate SQL statements, the client can simply call the relevant stored procedure. That makes life easier for the client, and also reduces network traffic. Moreover, it can improve security. By defining an appropriate interface to the ...
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