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What it creates while a primary key is combined with a foreign key?
It creates Parent-Child relation ship between the tables that connect them while a primary key is combined with a foreign key.
how does Btree differ from a B+ - tree?
One-way Associations If an association is only traversed in single direction, then it is known as one-way association. It is implemented as a pointer or an attribute which con
Q. Why would you choose a database system instead of simply storing data in operating system file? Define at a base concept in details. Sol. Advantages of Database over Fil
Attributes and its types explain?
Example : Search the name, department number and salary of employees drawing minimum salary in that department. SELECT ENAME, SAL, DEPTNO FROM EMP WHERE SAL IN (SELECT MI
Increases efficiency : Data is stored close to most often used site, therefore retrieval would be faster. Also, data that is not required by local applications is not stored, there
i have a homework assignment identical to one you have listed
Distributed Database Management System
What subschema expresses ? A subschema expresses the external view. (External schemas are called also called as subschemas)
, write the relational schema, and draw the new dependency diagrams. Identify the normal forms for each table structure you created
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