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The Incident table, with an auto-incrementing incident number, etc, looks like: incident_num reporter date time incide
Explain the three data models namely relational, network and hierarchical and evaluate their relative advantages and disadvantages. Hierarchical Model: In hierarchical model, da
Examples:- Hierarchical Model: It tells data as and relationships by hierarchy of data values. Figure illustrates an example of hierarchical model. Now a day's these models are
A basic model of Database Access Control Models of database access control have grown out of previous work on protection in operating systems. Let us talk about one simple mode
What is conceptual schema? The schemas at the view level are known as subschema that describe dissimilar views of the database.
what are information system hirarchy?
If the deletion violates referential integrity constraint, then three alternatives are available: Default option: - refuse the deletion. It is the job of the DBMS to describ
Question 1: (a) Explain the legal meaning of :- (i) Computer Service Person (ii) Data holding (b) Explain how the law ensures Data protection and Security. Qu
Database Administrator One of the main perpose for having the database management system is to have control of both data or programs accessing that data. The person having li
create an e-r diagram usuing graphical dipicted software that could theoritically be used in resturant application
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