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What functions does a data dictionary perform? In a (DBMS)data management system, the principal functions performed by the data dictionary are Management of data defini
What are the advantages of using a DBMS? The benefits of using a DBMS are a) Controlling redundancy b) Restricting unauthorized access c) Giving multiple user interfac
Determine the Disadvantages of file based systems Some of the disadvantages of file based systems are like this: Data redundancy and inconsistency: the dissimilar applic
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:
Related fields in a database are grouped in which form? Related data fields in a database are grouped to form a data record. (A record is a collection of related fields)
How to draw an ER diagram to a finance companz
how to calculate frequency count of algorithm
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
write-set(T): Each data items that are written by a transaction T
A use case diagram giving a pictorial overview of user requirements and brief use case descriptions. As the case study contains only an outline of a business scenario, you will als
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