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In an organisation various projects are undertaken. Each projects can employ one or more employees. Every employee can work on one or more projects. Each project is undertaken on the request of client. A client can request for various projects. Each project has only one client. A project could use a number of items and a item may be used through various projects. Draw an E-R diagram and convert it to a relational schema.
The relational schema has subsequent tables 1) Project (Pid, Pname) 2) Employee (Empid, Ename) 3) Client (Cno, Cname) 4) Item (I type, I name) 5) Use (Pid, I type) 6) Work (Pid, Empid) 7) Request (Pid, Cno)
Consider the following relations: S (S#, SNAME, STATUS, CITY) SP (S#, P#, QTY) P (P#, PNAME, COLOR, WEIGHT, CITY) Give an expression within SQL for each of queries b
User error : This contains errors in the program (e.g., Logical errors) with errors made by online users of database. These types of errors can be avoided by applying some check
State the terms Designing the database and Normalization Designing the database: Out of the ERD we have formed, it is very easy to verify the tables, the attributes which the
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
Where does view definition stored? A view definition is permanently stored as part of the database.
Define canonical cover? A canonical cover Fc for F is a set of dependencies like F logically implies all dependencies in FC and Fc logically shows all dependencies in F.
An entity type usually has an attribute whose values are distinct for every individual entity in the collection. Such an attribute is known as a key attribute and its values can be
Which language used in application programs to request data from the DBMS is referred? Language which is used in application program is DML to request data from the DBMS is ref
PHYSICAL DBMS ARCHITECTURE The physical architecture defines the software components used to process and enter data, and how these software components are related and interc
Write the syntax of creating an INDEX ? Syntax of Creating an Index: CREATE [BITMAP] [UNIQUE] INDEX ON ( [, ] . . .);
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