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Hierarchical model is also known by?
A hierarchical model is also known as a Tree structure.
random file sharing
Explain Relational model and their use in DBMS? Relational Model - The relational model was first introduced through E.F. Codd of the IBM Research in the year of 1970. The mode
we need example of 2phase locking
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Whst is logical schema ? Logical schema is the entire database.
Explain the shadow paging recovery technique. Ans: Shadow paging is a method used to acquire atomic and durable transactions, and provides the capability to manipulate pages i
What are the drawbacks of File Oriented System in details?
Define the Boyce-Codd Normal Form with instance and also Compare BCNF and 3NF. Ans: BCNF: For each functional dependency X->Y in a set F of functional dependencies over relati
What is called mirroring? The simplest approach to introducing redundancy is to duplicate each disk. This method is called mirroring or shadowing.
A field-groups statement or an insert statement reverses storage space and transfers values. False.
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