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What is Management System?
A management system is a set of rules and process which help us to create organize and manipulate the database. It also helps us to add, change delete data items in the database. The management system can be either manual or computerized.
The management system is significant because without the existence of some kind of rules and regulations it is not possible to preserve the database. We have to select the particular attributes which should be contained in a particular table; the common attributes to make relationship between two tables; if a new record has to be inserted or deleted then which tables should have to be handled etc. These issues must be resolved by having some type of rules to follow in order to handle the integrity of the database.
What is Foreign Key Foreign Key: Sometimes we may have to work with an attribute that does not have a primary key of its own. To recognize its rows, we have to use the primar
Problem : AirwaysCentre, an international airline booking company currently uses a relational database system for their operations, which includes the following relations: P
What is the major advantage of object-oriented programming paradigm? The ability to modify the explanation of an object without affecting the rest of the system is the main adv
Which operation is used if we are interested in only certain columns of a table? PROJECTION operation is used if we are interested in only certain columns of a table.
Consider the subsequent relations RENTER(rno, fname, lname, address, tel_no, pref_type, max_rent) VIEWING(rno, pno, date, comment) PROPERTY_FOR_RENT( pno, street, area ,city,
Describe the term- State Diagram State Diagram: An object could receive a sequence of the input instructions. The state of the object can differ depending upon sequence of in
ER diagram on cosmetics
What is known as a search key? An attribute or set of attributes used to look up records in a file is known as a search key.
explaination
What is DML (Data Manipulation Language)? This language that enable user to access or manipulate data as organised by appropriate data model. Procedural DML or Low level: DM
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