Chapter 4

Databases

This chapter focuses on databases and their relationship to enterprise applications. This chapter begins by discussing standard terminology associated with databases then quickly moves on to a discussion of SQL. Some of the more common operations including SELECT, INSERT, UPDATE, and DELETE statements for working with data and CREATE, ALTER, and DROP statements for working with database schemas are discussed. Database design topics including the concepts of OLTP versus OLAP database types, database normalization, how keys are used in databases, intersection tables, and indexes are all discussed and their usage given through numerous examples. Access control and database security are discussed in detail and various ways to protect ...

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