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Consider employee (e_no, e_name, e_salary, d_code), dept(d_code, d_name) and dependent (depndt_name, e_no, relation). Show the names of employees in purchase and accounts departments with at least one dependent.
SELECT e_name FROM employee, dependent, dept WHERE employee.d_code=dept.d_code AND employee.e_no=dependant.e_no AND d_name IN (‘ACCOUNTS', ‘PURCHASE') GROUP BY e_name HAVING COUNT (e_no)>=1
Explain Clustering file organization (i) Determine if a record of file is physically ordered on a nonkey field - that does not comprise a different value for each record - that
Illustrate the collaboration and relationship diagram A collaboration is the society of interfaces, classes and other elements which work together to provide some cooperative b
(a) Why did SAP introduce the extended star schema?
An employee record has the following structure struct employee { int eno; char name[22]; float salary; char dept[10];}; (i) Calculate the record size R in bytes.
The figure below depicts the conceptual diagram of a banking system. (a) Describe one example relevant to the system in figure, for each of the 4 types of enterprise appl
What is storage manager? A storage manager is a program module that gives the interface between the Low level data kept in a database and the application programs
Need a sample of a clinic database relationships
The Third Normal Form (3NF) Even though, transforming a relation that is not in 2NF into a number of relations that are in 2NF take out many of the anomalies, it does not neces
Explain view in RDBMS? View - A view is a relation (virtual rather than base) and could be used in query expressions, which is, queries can be written by using the view as a re
What are the uses of ODBC? Under what circumstances we use this technology? ODBC expose database capabilities within a standardized way to the application programmer by an ap
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