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What are the basic objects of the data dictionary? Tables Domains Data elements Structures Foreign Keys
Modify a sequence: ALTER SEQUENCE SEQSS INCREMENT 2 MAXVALUE 3000; Removing a sequence: DROP SEQUENCE SEQSS;
Homework chapter 10 no 3
WHY SHOULD NULL IN A RELATION BE AVOID AS possible?
Describe domain constraints. Domain constraints contain entity integrity and referential integrity. The domain is a set of values that might be assigned to an attribute. The en
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
The Assessment page has a link to download a conceptual model, and a list of data. You are to map this conceptual model, and create the database in Oracle using your own DDL. T
Explain I command in QBE ? I : It is the command in QBE that is used to insert tuple (s) into the database
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
A full discription of the new, a discription of its components, and the bebefit it will provide a company. A disscussion of the information usedin the system. A disscussion of any
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