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Increases efficiency: Data is stored close to most often used site, therefore retrieval would be faster. Also, data that is not required by local applications is not stored, therefore the size of data to be looked into is smaller.
Consider a systems development project with the following data Activity Duration (weeks) Precedence Relationship 1. Software design
Make SQL statements for the following scenarios. Your response should contain SQL statement, output and any other assumptions you have made to arrive at the answer. For Colorado cu
This project requires you to create a database design. Your design will be documented in a set of Entity-Relationship diagrams. Draw a set of Entity-Relationship diagrams to mode
In which relational modes, cardinality is termed? Answer : Cardinality is termed in a number of tuples relational modes.
HOW MANY TYPES OF VIEWS
What are the comparison operator in SQL? Comparison operator in SQL are =, LIKE and BETWEEN
Why are cursors necessary in embedded SQL? A cursor is an object used to store the output of a query for row-by-row processing through the application programs. SQL statements
What is entity in DBMS? Entity: A DBMS entity is either a thing in the modelled world or a drawing element in an ERD.
Define the phases of two phase locking protocol Growing phase: a transaction may get locks but not release any lock. Shrinking phase: a transaction might be release locks bu
(a) Why did SAP introduce the extended star schema?
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