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What are the different kinds of database end users? Discuss the major activities of each?
End-Users - End-users are the people whose jobs need access to the database for querying, updating, and generating reports; the database first and foremost exists for their use. The different types of end-users are:
Casual end-users - occasionally access the database, required different information each time
Naive or Parametric end-users - includes tellers, clerks, etc., make up a sizable portion of database end-users, major job function revolves around constantly querying and updating the database
Sophisticated end-users - involves engineers, scientists, business analyst, etc., use for their complex requirements
Stand-alone users - manage personal databases by using ready-made program packages, gives easy-to-use menu-based or graphics-based interfaces
What are three components of the schema architecture proposed by ANSI/SPARC? The three component schema architecture proposed by ANSI/SPARC is as given below: External sche
Security: In a centralised system, access to the data can be simply controlled. Though, in a distributed DBMS not only does access to replicated data have to be controlled in many
Atomicity: It describes a transaction to be a one unit of processing. We can also say either a transaction will be finished completely or not at all. In the transaction example 1
What is relational model feature? A relational model feature is much more data independence than some other database models.
Conversion of entity sets: I) For every strong entity type E in the ER diagram, we make a relation R containing all the easy attributes of E. The relation R pri
Hi, Do you offer private tuition for DBMS?
Define lock? Lock is the most common used to execute the requirement is to permit a transaction to access a data item only if it is currently holding a lock on that item.
Prepare Heart Failure Registry database How are you today? Please I would like you to design a Heart Failure registry where doctors will log in to enter information about their
What are the typical phases of query processing
The insertion of a tuple in the aim of reference does not cause any destruction. Though, insertion of a tuple in the relation in which, we has the foreign key, for instance, in ASS
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