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Explain Data Dictionary in short?
Find out the names and company names of all employees sorted in ascending order of company name and descending order of employee names of by which company. SELECT EMPLOYEE_NAME,
Secondary Indexes Let consider the student database and its clustering index and primary (only one will be applicable at a time). Now consider the state when the database is to
Aggregation Aggregation is stronger form of association. It represents the "has-a" or "part-of" relationship. An aggregation association depicts a complex object which is comp
What are the three data anomalies that are likely to occur as a result of data redundancy? Can data redundancy be completely eliminated in database approach? Why or why not? A
Where does view definition stored? A view definition is permanently stored as part of the database.
Selective replication: This is a combination of generating small fragments of relation and replicating them rather than a entire relation. The data should be fragmented on require
What are the various symbols used to draw an E-R diagram (any 3)?
Project Description: The work is about founding the best skilled person for the job. I will give you the job description. Skills required are Data Entry, Database Administrat
What are uncommitted modifications? The immediate-modification technique permits database modifications to be output to the database whereas the transaction is still in the act
explain exhausitively the problems associated with er diagrams with ellustrations
A data dictionary subsystem keeps way of the definitions of all data items in database. This includes elementary-level data items, fields, group and record-level data structures, as well as relational tables. It keeps way of relationships that is between varieties of data structures. It maintains indexes that are used to access data speedily. It also keeps track of screen and report format definitions that might be used by a range of application programs.
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