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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.
What three major types of actions includes databases? Briefly discuss these The three major types of actions including databases are: (i) Defining: It includes specifyin
What is a relationship called when it is maintained between two entities? A relationship is called Binary relationship when it is maintained between two entities.
Question: (a) Prepare an ERD for the scenario given below. (b) Convert the ER diagram produced in (a) above into its physical design. You have to choose an appropriate Pri
what is attribute is attribute inheritance in dbms?
Produce a set of relations (equivalent to the Finkelstein entity list) in third normal form (3NF) from the following un-normalised relation. You must use the Finkelstein methodolog
What is a heterogeneous distributed database? In a heterogeneous distributed database, dissimilar sites may use different schemas, and dissimilar dbms s/w. The sites may not be
Critically evaluate the bulleted list of information-related items in this case study. How are each contradictory to the notion of being an information-literate knowledge worker?
Attributes and its types explain?
Create Student DB and perform delete operation? STUDENT (name, student#, class, major) COURSE (course name, course#, credit hours, department) SECTION (section identifier, co
Hierarchical
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