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Explore the 16 essential SQL commands categorized by DML, DDL, DCL, and TCL. Learn how SQL simplifies data management and improves productivity.
Learn the relationship between users and schemas in Oracle databases. Discover how they interact and manage database objects effectively.
SQL Developer is a tool for connecting to an Oracle database (or, in fact, some non-Oracle databases too) and issuing ad hoc SQL commands.
Learn how to use SQLPlus on Linux and Windows. Configure environment variables, launch SQLPlus, and connect to Oracle databases with ease.
Understand the key advantages of Oracle packages over standalone procedures. Learn how packages promote modularity, encapsulation, and better coding practices.
Learn about stored procedures, functions, and packages in Oracle. Discover their benefits, performance boosts, and how they improve security, integrity, and productivity.
Understand the differences between anonymous PL/SQL blocks and stored procedures in Oracle. Learn when to use each and how they impact performance.
Learn about the Ninety-Ninety Rule in software development. Discover why the final stages of a project often take as long as initial development.
Learn how to manually update the hostname in Oracle XE after a system name change. Fix listener errors with step-by-step instructions.
