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State about the Tables- DBMS
Data is stored in columns and rows (much like a spreadsheet -main difference is how data is organised). Every row in a table is known as a record that is made up of a number of fields (columns in the table). Data type in the fields is generally either text, numeric or time/date. Most databases comprise a number of tables that are generally linked together in some way.
Consider employee table of (i) and list names of department(s) for which average salary for department is more than 10,000. (SELECT d_name FROM dept WHERE d_code IN (SELECT d_c
Concurrency Identification While designing analysis, model we map real world model into our analytical model. Real life objects are simultaneous in nature, but all the design
The Database Approach In order to overcome the limits of a file system, a new approach was needed. Hence a database approach emerged. A database is a persistent collection of
i need to implememnt a treee based mining algorithm. do you have an expert that can do that?
What is SQL, and why is it important? SQL stands for Structured Query Language, and is the most significant data processing language in use today. It is not a complete programm
What is the aim of object design The aim of object design is to identify object which the system contains and the interactions among them. The system implements specification
Which element in the database can modified by changing the data dictionary? Data elements in the database can be changed or modified through changing the data dictionary.
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A database is a set of data. But, is the data kept in a database trustworthy? To answer that query we must first answer the question. What is integrity? Integrity simply means t
What are shortcomings in structured approach? Structured methodology treats data and their behaviours separately, and this makes it harder to isolate changes. If changes are re
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