Date, C.J. <br/><br/>
An Introduction  to database. / 
C.J. Date 
 - 2nd ed. 
 - London:  Addison-Wesley Publication,  c1977. 
 - xxiii, 536 p.:  ill.;  24cm. 
<br/><br/> Includes index. 
<br/><br/>Contents: Database system architecture: Basic concepts -- Storage structures -- Data models and data sublanguages -- The Relational approach: The Relational data model -- A Data sublanguage based on relational calculus -- A Data sublanguage based on relational algebra -- The Data sublanguage sequel -- Query by example -- Further normalization -- The External model -- Some relational systems -- The Hierarchical approach: The Architecture of an IMS system -- The IMS data model -- The IMS external model -- The IMS data sublanguage -- IMS storage structures -- IMS logical databases -- IMS secondary indexing -- The Network approach: The Architecture of a DBTG system -- The DBTG data model -- The DBTG external model -- The DBTG data sublanguage -- Security and integrity: Security -- Integrity -- Review, analysis, and comparisons: The Three approaches revisited. 
<br/><br/><label>ISBN: </label>0201144565 
<br/><br/><label>Subjects--Topical Terms: </label> Database systems. 
<br/><br/><label>LC Class. No.: </label>QA76.9.D3.D37