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What are the time stamps associated with each data item?
W-timestamp (Q) denotes the largest time stamp if any transaction that implemented WRITE (Q) successfully.
R-timestamp (Q) denotes the largest time stamp if any transaction that implemented READ (Q) successfully.
Strict 2PL :Though, this basic 2PL suffers from the trouble that it can result into loss of isolation / atomic property of transaction as theoretically speaking once a lock is rele
Can we delete data element, which is being used by table fields. No we cant delete data element.
how does Btree differ from a B+ - tree?
Submit the table creation statements (including constraints) for the Database Model. Submit them all in a single script file. Also submit a document explaining what test data yo
In E-R diagram how generalization is represented? in E-R diagram generalization is represented by Triangle shape.
In case of entity integrity, the primary key may be declared? In a case of entity integrity primary key may be not Null.
Explain the difference between using functions along with and without grouping attributes in relational algebra. Give examples. Ans: Group functions are used to group data of
A video rental company has several branches. The data held on each branch is the branch address made up of street, city, state, and zip code, and the telephone number. Ea
For this application, we will consider IBM DB2 catalog data (i.e., metadata) for IBM's enterprise-class servers running the z/OS (formerly OS/390 or MVS) operating system. One of
What is Cross Product? Simply Cross product is Binary Operator
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