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How the time stamps are implemented
Use the value of the system clock as the time stamp. That is a transaction's time stamp is equivalent to the value of the clock when the transaction enters the system.
Use a logical counter that is increased after a new timestamp has been assigned; that is the time stamp is equivalent to the value of the counter.
project on dbms
List the string operations supported by SQL? 1) Pattern matching Operation 2) Concatenation 3) Extracting character strings 4) Converting among uppercase and lower cas
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Explain the relevance of Data Dictionary in a Database System? Data dictionary is a database in its own right residing on the disk that consist of Meta data which is = Data abo
Critically evaluate the bulleted list of information-related items in this case study. How are each contradictory to the notion of being an information-literate knowledge worker?
Define Thomas write rule Thomas' write rule: The Thomas' write rule is a modification of timestamp-ordering protocol for concurrency control. Assume that transaction T i issue
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The scenario You have been approached to design and implement a prototype of a distributed information system for a national car part retail outlet chain. The company comprises
A distributed transaction consists of subtransactions that execute at different sites and access local DBMSs at those sites. For example, a distributed transaction that transfers m
Consider a database application that deals with an Employee relation with information such as SIN, name, data of birth (DOB), and DID (the ID of the department at which the employe
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