"This book has been prepared for the Computer Science and Information Technology graduates to help them understand the basic to basic concepts related to SQL as database language. After completing this book you will find yourself at a moderate level of expertise in using SQL for database and software development, where you can take yourself to next levels.SQL - Structured Query Language is the heart of a relational database management system. It is used to query the database, to create new tables in the database, to update and delete database fields, and to set privileges in the database. This book is for everyone who needs to study and access an Oracle database. It will train all SQL related users, developers, DBAs, designers, and managers. SQL is based on research dating back to the late 1960s, but its first commercial release was in the RDBMS by Oracle Corporation in 1979. Since that time, every other database vendor has adopted SQL, and ANSI and the ISO have made it a standard. Although there may be some diverge in other vendors extensions to SQL, the core language is standard across all vendor boundaries. SQL have a long history and relative simplicity but still there are few developers and database administrators who are masters in these. There are chapters on basic SQL elements naming requirements, column types, pseudo-types, data conversion rules, operators Data Definition Language – DDL and Data Manipulation Language - DML common language elements like constraints, storage clause, predicates SQL functions Before you start proceeding with this tutorial, I'm making an assumption that you are already aware about basic computer software and harware concepts like what is primary and secondary memory, various storage systems, operating system and applications etc. If you are not well aware of these concepts then I will suggest going through a short tutorial on Computer Fundamentals.
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