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What are object interaction diagrams? Object interaction diagrams are the diagrams that used to describe order in which messages are communicated in execution of an operation,
what are the type of the database
Drawbacks of Database systems ?
WHAT IS DSS? WRITE ITS REQUIREMENTS.
What is a PROJECT operation? The project operation is a unary operation that returns its argument relation with particular attributes left out. Projection is shown by pie (π).
What are the disadvantages of relational approach? Disadvantages of relational approach: • Substantial hardware and system software overhead • May not fit all business models •
What are the two types of serializability? The two types of serializability is a) Conflict serializability b) View serializability
What is called query processing? Query processing refers to the range of activities included in extracting data from a database.
assume we have the following apllicationthat model sccer team the games they play and the players inv each teamin the design we want to capture
What are the uses of the information in the Data dictionary? The following information is directly taken from the Data dictionary: Information on fields displayed with
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