Finish Chapter 1 Workers behind the Scene - Classes
Finish Chapter 1 Workers behind the Scene - Classes
Finish Chapter 1 Workers behind the Scene - Classes
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1/19/2012<br />
External or view level<br />
• External Schema<br />
– Different Views<br />
– Defined by end user requirements<br />
Courseinfo(cid: string, fname: string, enrollment: integer)<br />
Classification of Database<br />
Management Systems<br />
• Data model<br />
• Relational<br />
• Object<br />
• Hierarchical and network (legacy)<br />
• Native XML DBMS<br />
• Number of users<br />
• Single-user<br />
• Multiuser<br />
10
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