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What are the benefits of document scanning?
Document scanning, in addition to being cost-efficient, also enhances productivity. This service enhances security as you set the parameters for who may view the document; enables a multitude of individuals to review the document at the similar time; provides the ability to search, retrieve, email and find documents easily; and reduces storage space needs.
What are the disadvantages of relational approach? Disadvantages of relational approach: • Substantial hardware and system software overhead • May not fit all business models •
Example: Consider the following relations: ROLLNO NAME ADDRESS COURSE_ID 100 Ka
What is ODBC ? ODBC - Open DataBase Connectivity which is also denoted by ODBC enable the integration of SQL along with a common-purpose programming language. ODBC expose data
What is persistency? Persistency ensures which data is stored and that after the object is no longer available (program stops running) the data will be available to other users
What is a hashing function? What are the properties of a good hashing function? Describe the folding technique for hashing functions. Ans: Hashing function is a method
Multiple column Queries: Syntax: SELECT COLUMN1, COL2,...... FROM TABLE WHERE (COLUMN1, COL2, ...) IN (SELECT COLUMN1, COL2,.... FROM TABLE WHERE );
Consider the ER schema below for the MoneyMaking supermarket chain problem. Translate the given ER schema into SQL CREATE TABLE statement.
Give the general form of SQL query? Select A1, A2............., An From R1, R2..............., Rm Where P
What is an entity relationship model? The entity relationship model is a collection of basic objects known as entities and relationship between those objects. An
What is the difference between a key and a superkey? Key - A key a single attribute or a combination of two or more attributes of an entity set which is used to identify one
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