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What was the method in which records are physically stored in a specified order according to a key field in each record ?
A method in which records are physically stored within a specified order according to a key field in every record is hash. (In hash method, a hash function is performed on the key value to determine the unique physical address of the record to store or retrieve)
write on the various type of relationalkey
Q. Explain the terms key constraints participation constraints and mapping caradinalities in ER model. Participation Constraints : The participation of an entity set E i
What are the function of DBA?
Explain the concept of Modeling With Objects A model is a conceptual representation of a specification, design or system from a particular point of view. A modelling language
What is aggregate function? Briefly describe it? Aggregate functions are functions that take a collection of values as input and return a one value. SQL offers 5 built-in aggre
In which relational modes, cardinality is termed? Answer : Cardinality is termed in a number of tuples relational modes.
Process of normalization is the integral part of designing a database. Justify this statement with suitable database design
What is known as clustering file organization? In the clustering file organization, records of several dissimilar relations are stored in the similar file.
Describe multi key files
Why older data models are being replaced by new data modelling 100 words accepted#
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