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Differentiate between join and outer join?
Outer joins return all rows from at least one of the tables or views mentioned within the FROM clause, as long as those rows get together any WHERE or HAVING search conditions.
All rows are retrieved from the left table referenced along with a left outer join, and all rows from the right table referenced in a right outer join. All rows from both tables are returned within a full outer join.
A table can be joined to itself within a self-join.
Consider entity type Employee with attributes empNumber (this is unique), empName, and the year when he/she was hired. An employee can either be a technical employee, a marketing e
Mention various steps required to draw an E-R Diagram. Draw an E-R Diagram for Student Information System. Mention all suitable assumptions to justify your answer.
You are required to program (in a high level language such as C, C++, Java) and implement a cache simulator which will have the following inputs and outputs:- INPUTS
Let us now make the E-R diagram for the student database as per the explanation given in the previous section. We can also states the overall logical structure of a database usi
What are audit trails? An audit trail is a log of all alters to the database along with information like which user performed the change and when the alter was performed.
WHAT IS SQL
What are the uses of ODBC? Under what circumstances we use this technology? ODBC expose database capabilities within a standardized way to the application programmer by an ap
What are the benefits of decomposing a system? The benefits of decomposing a system into subsystems are that after decomposition, each individual component become smaller and e
You are to write a property management database program that allows a real estate agent to view, add, search, and save property listings. The program is to do the following: 1.
what is query processing?
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