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Explain retrieval in QBE?
Retrieval in QBE : A "GUI" for expressing queries.
But has influenced many projects Especially PC Databases: Paradox, Access, etc.
Order by clause By using this rows can be sorted It is used in the last portion of select statement By default it gets ascending order DESC: is used
Consider a database schema consisting of four relations, whose schemas are: Product (maker, model, type) PC (model, speed, ram, hd, price) Laptop (model, speed, ram, hd, s
Explain the paths in the association network We can analyze use of paths in the association network as given below: Calculate each operation Find associations whic
State the Object Design for Processing The object design phase comes after analysis and system design phase. The object design phase includes implementation details like as i
Analyzing Association Traversal Association Traversal shall be understood properly for the association design explanation. Analyzing association traversal means analyzing tra
In which relational modes, cardinality is termed? Answer : Cardinality is termed in a number of tuples relational modes.
what is data link layer
Define Radix conversion method One clever way to transform binary numbers to BCD notation (binary-coded decimal) is the "double dabble algorithm". It can be adapted to transfo
A buyer for a large department store chain must place orders with an athletic shoe manufacturer six months prior to the time the shoes will be sold in the department stores. In par
Physical Records These are the records that are stored in the secondary storage devices. For the database relation, physical records are the group of fields kept in adjacent me
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