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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)
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What is multiplicity in the associations? Give an example to explain multiplicity? Multiplicity in association indicate number of objects participate in any relationship. For
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Benefits and limitations
Improved availability: The data in a distributed system may be replicated so that it is at more than one site. Thus, the failure of a node or a communication link does not necessar
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folding method and mid square method using visual basic
Types Of Indexes One of the words used during the file organisation is the term index. In this part, let us describe this term in more detail. We find the index of keywords
Using the concepts defined previous, we have identified that strong entities in COLLEGE database are FACULTY, STUDENT, COURSE and DEPARTMENT. This database also has one weak entity
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