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What are the uses of the information in the Data dictionary?
The following information is directly taken from the Data dictionary:
What are the categories of SQL command? SQL commands are separated in to the following categories: 1. Data - Definitition Language 2. Data Manipulation language 3. Dat
The issues relating to the Design of the Physical Database Files Physical File is a file as stored on the disk. The major issues relating to physical files are: • Cons
Creating views with Read only option : In the view definition this option is used to make sure that no DML operations can be done on the view.
Determine the term- Active values An active value is that has dependent values. Every dependent value registers itself with active value that contains a set of dependent values
If one requires to access data using Logical Database , the use of events is unavoidable. Yes, if someone wants to access data using Logical database then the use of events
E-R Model This data model is based on real world that consists of basic objects named entities and of relationship among these objects. Entities are illustrated in a database
coventions for displaying an ER schema as ER diagram
Why did SAP introduce the extended star schema? Explain why it is reported to be better than the traditional schema model?
The Database Approach In order to overcome the limits of a file system, a new approach was needed. Hence a database approach emerged. A database is a persistent collection of
Attributes and its types explain?
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