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What is recursive closure? Why is it not possible to describe this operation in relational algebra? Recursive closure is applied to recursive relationship. An instance of rec
What sorts of tables one can se in designing the hierarchy of a LDB? Tables, which are having Foreign Key relations.
Question: i) Explain the terms data warehousing and data mining. ii) Discuss the importance of the following security principles that a digital firm should amongst others, n
When It is better to use files than a DBMS? It is better to use files than a DBMS when Multiple users wish to access the data.
Define tuple variable Tuple variable is a type of variable whose domain is the set of all tuples.
What is called query processing? Query processing refers to the range of activities included in extracting data from a database.
Project Description: I would like to get a database of a website which has clients email name and phone number. If you are able to get information from a website, by entering
Can you scan double-sided documents - and remove blank pages? Our software and imaging systems supports duplex scanning, at the same time scanning both sides of a page. Program
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 departm
What is Data dictionary? A data dictionary is a reserved space in a database that is employed to store information about the database itself. A data dictionary may consist o
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