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Terminology used and implementation features

We imply that the terms table and relation; row and tuple; column, attribute, and field are synonyms. Readers interested in terminology subtleties may refer to the fundamental work by C.J.Date [1].

When writing queries online, use  A database management system (DBMS) by Microsoft Corporation. SQL(Structured Query Language) is a database computer language designed for the retrieval and management of data in relational database management systems (RDBMS), database schema creation and modification, and database object access control management.SQL Server 2012 syntax in case you need specific features not included in the SQL standard (e.g., built-in functions). All scripts in this book have been tested against this DBMS, and its also used on the SQL-EX.RU site. Reference information on special aspects of implementation can be found in Part III of this electronic book.

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