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What is deadlock? How can it be avoided? How can it be resolved once it occurs? Deadlock happens when two transactions are each waiting on a resource that the other transaction
Which model is record based logical model? Network Modelis basically known as record based logical model.
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
Fragmentation: It is definite as partitioning of a relation into various fragments.Every fragment can be stored at a dissimilar site.
entity relationship diagram for online examination system
This language that enable user manipulate to or access data as organized by appropriate data model. Low level or Procedural DML : DML needs a user to specify what data ar
Define database management system? Database management system (DBMS) is a set of interrelated data and a combination of programs to access those data.
What is an ERD?
Question 1 Explain the concept of database recovery management. Explain the different levels of backup used for recovering data Question 2 What are the different types of par
Question: In relation to distributed database answer the following questions: (i) Give a brief definition of distributed database. Support your answer with an appropriate di
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