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Explain Hierarchical Model ?
Hierarchical Model - It was established to model several kinds of hierarchical organizations which exist in the real world. It uses tree structures to represent relationship between records. In hierarchical model, no dependent record could occur without its parent record occurrence and no dependent record occurrence might be linked to more than one parent record occurrence.
Haw does it work one database application
There are three main sources of utilities and applications for a DBMS: a. Vendor applications and utilities are given for working with or maintaining the database, and generally
pine vally company
Define Timestamp ordering Ans In timestamp-based method, a serial order is made among the concurrent transaction by assigning to every transaction a unique nondecreasing number
Which method is used to key transformation ? A hash method is used to key transformation.
In the architecture of a database system which external level used? In the architecture of a database system view external level used.
Problem 1. Write the SQL queries using Data Manipulation Language (DML) statements. Insert values into student table with field names using insert command Display the
differences between a classified catalog and a dictionary catalog
how to find entities
Explain the cartesian product in Database Management System
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