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Describe the functions and features of foreign key? Foreign Key : The primary key of one file or table that is implanted in another file or table to implement the relationships
What is known as a search key? An attribute or set of attributes used to look up records in a file is known as a search key.
Question: AirwaysCentre, an international airline booking company currently uses a relational database system for their operations, which includes the following relations: P
Explain four causes for failures in data warehouse projects
please describe the data base management with the easy example &give the application?
deffine class&object
Example: Consider the following relations: ROLLNO NAME ADDRESS COURSE_ID 100 Ka
aggregation
Winfield is a small city with a population of 22,000 with buses serves three routes in Winfield and neighboring areas. As the city’s IT director, you have been asked to set up an i
for the following business rules . Identify all entities, attributes, relationships, primary keys, cardinalities and constraints where appropriate 3. (9) An art museum owns a larg
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