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What is serializability? Explain its types?
The data base system must control concurrent implementation of transactions, to ensure that the data base state remains consistent. There are dissimilar forms of schedule equivalence they lead to the notions of
a) Conflict serializability
B) View serializability
Conflict serializability
We say that ii and I j conflict if they are operations by dissimilar transaction on the similar data item and at least one of these instruction is a write operations
Consider a systems development project with the following data Activity Duration (weeks) Precedence Relationship 1. Software design
What is the purpose of storage manager? The storage manager is responsible for the following a) Interaction with the file manager b) Translation of DML commands in to low
The Assessment page has a link to download a conceptual model, and a list of data. You are to map this conceptual model, and create the database in Oracle using your own DDL. T
Structure Of Distributed Database: A distributed database system haves of a collection of sites, each of which keeps a local databases system. Every site is able to process local
Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4
List the set operations of SQL? 1) Union 2) Intersect operation 3) The except operation
Which method is used to key transformation ? A hash method is used to key transformation.
Do you have experts of the dbms
Given the subsequent relations: vehicle (reg_no, make, colour) Person (eno, name, address) Owner (eno, reg_no) Write expressions
Database systems have many opposite efforts ?
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