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I have been given 8 differebt data warehouseing failure case studies. I need to question 4 questions for each
What do you mean through integrity constraints? Integrity Constraints -An integrity constraint is a condition specified on a database schema and restricts the data in which
external and internal mapping with examples
multidimensional data model
Create Student DB and execute Insert query? STUDENT (name, student#, class, major) COURSE (course name, course#, credit hours, department) SECTION (section identifier, course
What is meant by software and hardware RAID systems? RAID can be executed with no change at the hardware level, using only software modification. Such RAID implementations are
Draw an Entity-Relationship model for the relational schema given in the Appendix. Show all the entities, relationships, relationship names, and attributes and also underline the
Draw and explain the three level architecture of the database system? A DBMS gives three levels of data is said to follow three-level architecture. The trget of the three-schem
The advantages of a database management system (DBMS) include :- Data integrity and elimination of duplication.
Write short notes on extension and intension? In any data model, it is significant to distinguish among the description of the database and the database itself the description
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