Database functions-system development life cycle
Write a short on the six database functions which occur during the systems development life cycle?
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The enterprise modeling that analyzes the present data processing. Conceptual data modeling which identifies attributes, entities, and relationships. The logical database design is identifies data security and integrity requirements. The physical database definition and designs which defines database to DBMS. The database implementation that installs and alters data from previous systems. Database maintenance that fixes mistakes in the database and database applications.
Describe the three types of data sources which are used with ODBC?
What are the disadvantages in File Processing System?
Write down the differentiation between lookup and filter transformation?
State the different advantages of the data warehousing?
Explain what do you mean by the virtual warehouse?
Describe briefly reusable transformations?
Illustrate the multi value or multicolumn problem? Include an example not employed in the text.
Describe briefly three types of binary relationships in DBMS?
Write out the disadvantages of using the Alias?
Explain what is meant by the term catalog and its types in the cagonos?
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