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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.
Determine the concept of Process Process: A process transforms the data values. It is represented as ellipse containing a description of transformation. Each procedure has a
Answer SQL Queries to extract data from data tables and questions on mapping conceptual data models into relational data model.
Sequences Sequences: Automatically produce unique numbers Are sharable Are typically used to make a primary key value Replace application code Speed up t
List the types of authorization. A) Read authorization B) Write authorization C) Update authorization D) Drop authorization
Explain the Functional Mode with help of an example. Functional Model The functional model shows a computation and functional derivation of data values in it without ind
Explain the term - Handling Boundary Condition These are some circumstances that to be handled in any system initialization and termination. Describes how system is bro
What are attributes? Give examples. An entity is shown by a set of attributes. Attributes are descriptive properties possessed by every member of an entity set. Example: pos
What is the meaning of Recovery? In deferred update methods, if a transaction fails before arriving its commit point, it will not have altered the database in any way, so UNDO
I need help with data warehousing and business intelligence course project about designing a data warehouse for a jewelry company that does not have one
Event Occurrence of a process is called event. In other words, the object can receive many input instructions. The changes which occur due to these instructions are known as e
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