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Oracle is a relational database technology developed by Oracle. PLSQL stands for Procedural Language extensions to SQL, and is an extension of SQL that is used in Oracle. PLSQL is closely …

Excel Tutorial Microsoft Excel is a spreadsheet and analysis program developed by Microsoft. Excel can be run on both Windows and Mac platforms. Each version of Excel can "look and feel" completely …

SQL stands for Structured Query Language and is the standard relational language that is supported by just about every database product. All database professionals should know how to write, …

MySQL is the world's most popular open-source relational database technology. Our tutorial will start with the basics of MySQL such as how to retrieve and manipulate data.

SQL Server is a relational database technology developed by Microsoft. Transact-SQL is an extension of SQL that is used in SQL Server. Transact-SQL is closely integrated into the SQL language, yet it …

PostgreSQL is the world's most advanced open-source relational database technology. Our tutorial will start with the basics of PostgreSQL such as how to retrieve and manipulate data. Then we will move …

Access Tutorial Microsoft Access is a unique tool released by Microsoft that provides both the functionality of a database and the programming capabilities to create end-user screens. Each …

Oracle / PLSQL: Roles This Oracle tutorial explains how to create roles, grant/revoke privileges to roles, enable/disable roles, set roles as the default, and drop roles in Oracle with syntax and examples.

Oracle / PLSQL: VIEW This Oracle tutorial explains how to create, update, and drop Oracle VIEWS with syntax and examples.