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Explain five duties of Database Administrator?
1. DBA administers the three stages of the database and, in consultation along with the whole user community, sets up an definition of the global view or conceptual level of the database.2. Mappings among the internal and the conceptual stages, as well as among the conceptual and external levels, are also defined through the DBA.3. DBA ensures in which appropriate measures are in place to manage the integrity of the database and in which the database is not accessible to unauthorized users.4. DBA is responsible for granting permission to the users of the database and stores the profile of each user within the database.5. DBA is responsible for defining process to recover the database from failures along with minimal loss of data.
Define access time. Access time is the time from when a read or write request is issued to when data transfer starts.
What are the advantages of having an index structure? Ans: The index structures commonly provide secondary access paths, which offer alternative ways of accessing the reco
The database will enable college administrators the ability to track students initial major. This will help college officials decide how best to prepare students for their goals an
Describe Data Manipulation language ? Data Manipulation Language (DML) - A data manipulation language is a language which enables users to access or manipulate data as organize
what is union compatable?
what is view?explain
What is an ERD?
Project Description: We have an encrypted HSQL Database which we want to change into csv format. HSQL DB . We have java application (jar file) which reads that database but n
What is NULL? Simply NULL means not in value.
What are the situations while DBMS should not be used? DBMS should not be used in situations like: (i) No need of security. (ii) Not difficulty to access the data (iii) N
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