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Explain what is Aggregation ?
Aggregation: This is used whenever we intend to show a relationship between an entity and the relationship. There is no provision for this in the ER Model. This is shown by placing the relationship between two entities along with the entities in a box and setting up a relationship between this box and another entity.
Explain Strict Two-Phase locking A transaction T does not release any type of its exclusive (X) locks until that transaction commits or aborts. In this method no other transact
Process of Adjustment of inheritance During object design, inheritance is readjusted by rearranging classes and operations, and abstracting common behaviour.
how map binary relation one to one
as a customer service employee explain five measures you would recommend to make even a displeased students patronize the school canteen
I have a small project that contains 3 deliverable s. I have done the first one and I would like you to help me with second one
What are the basic objects of the data dictionary? Tables Domains Data elements Structures Foreign Keys
Explain the term- Query. Queries are used to repossess and show specific records in a table. They can also be used to show specific fields of specific records, which meet the co
What is nested relational model? The nested relational model is an extension of relational model in which domains might be either atomic or relation valued.
domain
#quesDefine a job scheduling strategy that will meet business requirement of reporting availability by 6am CST for the following cubes? Show the job scheduling dependencies in a pi
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