SQL and Classification of SQL in Oracle Database. SQL is Structured Query Language , which is used for storing, manipulating and retrieving data stored in a relational database .SQL is the standard language for RDBMS. All the Relational Database Management Systems (RDMS) like Oracle, MySQL, Sybase, Informix, IBM DB2 and Microsoft SQL Server use SQL as their standard database language. Oracle is one of the more secured database as compared to other databases. Importance of SQL : SQL and PL/SQL is a backend process where all data is stored and retrieved in GUI which created either by any programming languages like Java, C++, PHP etc. so we need to have very secure database so that there will be no impact for users. SQL allows users to access data in the relational database management systems. SQL is used to communicate with a database.SQL and PL/SQL allows users to create and drop databases tables , views , stored procedures , functions , packages , trigger et...
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