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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.
Explain what is Aggregation ? Aggregation: This is used whenever we intend to show a relationship between an entity and the relationship. There is no provision for this in th
What is association? Give an example of association Association is used for establishing relationships among classes. Association describe links among/between classes. For exa
how to write a in a text and load it on mysql
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You are required to write a report which evaluates two of the following issues in relation to your case study database: a. Security issues b. Performance issues c. Backup
Define Radix conversion method One clever way to transform binary numbers to BCD notation (binary-coded decimal) is the "double dabble algorithm". It can be adapted to transfo
Advantages And Drawbacks Of Ddbms There are various reasons for building distributed database systems, with sharing of data, reliability and availability, and speedup of query
Clustering Indexes It may be an excellent idea to keep data of the students in the order of the programme they have registered as most of the data file accesses may need studen
Two-way Associations Mostly, associations are travel in both directions, although not usually with same frequency. There are three approaches for the implementation. In
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
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