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What is the difference among a database schema and a database state? The collection of information stored in database at particular moment in time is known as database state a
What does conceptual design work? A conceptual design involves modelling independent of the DBMS.
What are called jukebox systems? Jukebox systems have a few drives and numerous disks that can be loaded into single of the drives automatically.
Construct a generalization-specialization hierarchy for a motor-vehicle sales company. The company sells motorcycles that comprise an engine number and cost; cars that have a chass
Which model is record based logical model? Network Modelis basically known as record based logical model.
Explain Record Based Logical Models? Record-Based logical Models: Also define data at the conceptual and view levels. Unlike object-oriented models, are used to state overall
Primary Index In primary index, there is a one-to-one relationship among the entries in the index table and the records in the major table. Primary index can be of two types:
Which are the two ways in which entities can participate in a relationship? Total and partial are the two ways in which entities can participate in a relationship
under what condition log based recovery is feasible?
what is natural join?
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