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Explain the disadvantages of a file processing system? Ans: Disadvantages of File Processing Systems include: 1) Data Redundancy 2) Data Inconsistency 3) Difficult to acce
Association as a cache This association must be updated when any new element is added to it, but testing for overlap using association is more efficient. Figure:
What are the requirements to ensure the objectives of file management principle is realized?
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
Although, the essential features of E-R diagrams are enough to design many database situations. Though, with more difficult relations and advanced database applications, it is need
Explanation on Data Sharing?
Construct a clean ans concise ER diagram for the database indicating the cardinality mapping for Employee management syatem
How can Redundant Associations be done It can be done by asking questions: i) Is there a specific arrangement of network which would optimize critical aspects of completed
In a Hierarchical model of data records are organized ? In the hierarchical model of data records are organized as Tree structure.
ER diagram on cosmetics
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