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Define Direct file organization?
The direct file organization is employed to enhance the performance in accessing the records than sequential file organization. In direct file organization, the key value is mapped straight to the storage location. The common method of direct mapping is by carrying out some arithmetic manipulation of the key value. This procedure is called hashing. While using this organization, an application like on-line transaction processing system can be designed that is why the centralized data are not only instantly accessible but are all the time up-to-date.
What is data independence? Data Independence: Techniques which permit data to be changed without affecting the applications in which procedure it. There are two types of data
What is Log Shipping? Log shipping is the method of automating the backup of database and transaction log files on a production SQL server, and then restoring them onto a stand
Define physical and logical data independence. How does this architecture help in achieving these? Data independence entails that change in one view must not need a change in t
Explain the benefit of OOM. Main benefits of object oriented modeling are development of system become fast, quality of the system get improve. It gives freedom of use of alrea
how to prepare a data dictionary for online examination system for certified courses?
what is entity in database system?
In this programming assignment, you will develop a simple database of student records. Here are the requirements: 1) A student record contains a name and a number. We assume tha
how many hourse have been spent on a certain project
Aggregation : One limitation of the E-R diagram is that they do not permit representation of relationships between relationships. In such a case the relationship along with its ent
Domain Constraint It shows that each attribute in a relation has to contain an atomic value only from the corresponding domains. The data types associated with commercial RDBMS
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