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Database, Database Management System
How many physical thing?
Posted Date: 9/28/2012 1:09:21 AM | Location : United States
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Differentiate sub-class and super-class, Differentiate sub-class and super-...
Differentiate sub-class and super-class? The specialization of a class is known as subclasses.eg: employee is a subclass of person and teller is a subclass of employee. Convers
Give an example of operations from the functions of a bank, Give an example...
Give an example of Operations from the functions of a bank. For creation of a saving account, you can write: bank::: create -savings-account (customer)->account. For oper
aggregate functions-data manipulation language, Aggregate functions ...
Aggregate functions Some of these functions are min, count, max, and avg. These functions help in getting consolidated information from a set of tuples. Example:
Write a short note on built in function in qbe, Write a short note on built...
Write a short note on built in function in QBE? Built in function in QBE: QBE involves various built in functions like AVG, MAX,MIN,SUM and CNT. We must prefix these operator
Mention the purpose of sid and sod lines, Mention the purpose of SID and SO...
Mention the purpose of SID and SOD lines SID (Serial input data line): It is an input line by which the microprocessor accepts serial data. SOD (Serial output data line)
Data files indices and data dictionary, The indices are accumulated in the ...
The indices are accumulated in the index files. The data is accumulated in the data files. Indices give fast access to data items. For example, a book database may be managed in th
Explain dbms- ddl-domain-alias, Briefly explain each of the following datab...
Briefly explain each of the following database terms. Use no more than 2-3 lines for each term. 1. DBMS 2. Update Anomaly 3. Alias (referring to tables in SQL queries)
Define outer union operation of the relational algebra, Define outer union ...
Define outer union operation of the relational algebra. Compute the outer union for the relations R and S given below. Outer Join - If there are any values in one tabl
Explain disadvantages of a dbms, Question : (a) Database Management Sy...
Question : (a) Database Management Systems (DBMS) is the foundation of business intelligence. Explain the following concepts related to DBMS: (i) Entity Relationship Diagr
Computing the closure of a set of functional dependency, What is meant by c...
What is meant by computing the closure of a set of functional dependency? The closure of F denoted by F + is the set of functional dependencies logically implied by F.
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