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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.
What is schema
how to implement hyrise in C plus plus
Redo Logs: Any database must have minimum two redo logs. These are the rules for the database; the redo logs record all modifies to the system objects or user objects. If any type
Key to represent relationship amongs tables is called ? A Key that represent the relationship between tables is called Foreign Key.
define anomalies and different types of anomalies with example
During the deletion of a tuple two cases can happen: Deletion of tuple in relation having the foreign key: In this type of case simply delete the desired tuple. For example, in
What is authorization graph? Passing of authorization from single user to another can be shown by an authorization graph.
complete assignment on the above title.
Consider an information system designed for an online company which provides IT products and services. These include desktops, laptops, networking products, IT books, parts, and te
Give some encryption techniques? A) DES B) AES C) Public key encryption
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