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What are the technique to define a schema completely ?
A schema is completely define by DDL and DML query language.
Explain CNT in the respects of QBE ? CNT: It is one of the aggregation commands given in QBE. It is used to identify number of tuples
WHAT IS DSS? WRITE ITS REQUIREMENTS.
What are the properties of transaction? There are three properties of transactions :- A) Atomicity B) Consistency C) Isolation
Short Note on mid Square Method of hashing? Mid square method of hashing: In the method midsquare hashing, the key is squared and the address selected from the center of the s
Describe the two types of methods for retrieving rows in Python? Fetchone()- Returns the next row as a sequence Fetch all()- Returns the entire result set like a strin
Explain the cartesian product in Database Management System
Define the term Domain. For each n every attribute there is a set of permitted values known as the domain of that attribute.
What is the meaning of Data Independence ?
The State of Newyork certifies firefighters throughout state keep track all of them, as well as the state’s of fire departments. Each fire department has unique department number
Assume you are given a uniprocessor system with one gigabyte of memory and a 300 gigabyte disk. The OS on the machine has a demand paged virtual memory system with a local page rep
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