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What is an index? An index is a structure that helps to place desired records of a relation quickly, without probing all records.
Using the concepts defined previous, we have identified that strong entities in COLLEGE database are FACULTY, STUDENT, COURSE and DEPARTMENT. This database also has one weak entity
What is Derived and stored Attribute? Derived and Stored Attribute - In a few cases, two or more attribute values are associated, for example, Age and BirthDate attributes of a
What are the aggregate objects in the data dictionary? Views Match codes Lock objects.
Question: (a) Define the term e-Government and briefly explain, using appropriate examples, the aspects it covers. (b) Give four reasons as to why a country should adopt e
Question: (a) Discuss the difference between a composite key and a composite attribute. How would each be indicated in an E-R diagram? Support your answer with appropriate exam
What is a hash index? A hash index organizes the search keys, with their associated pointers, into a hash file structure.
examples of fields in a database
Give short note on the following terms:Dirty pages and ETL a.) Dirty pages. These are buffer pages which comprise modifications which haven't been written to disk. b.
Answer SQL Queries to extract data from data tables and questions on mapping conceptual data models into relational data model.
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