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What is Hierarchical DBMS
In HDBMS, data is structured in a tree like manner. There is a parent-child relationship between data items and the data model is very suitable for representing one-to-many relationship. To access the data items, some type of tree-traversal techniques are used, such as preorder traversal.
Define page. The database is partitioned into some number of fixed-length blocks, which are referred to as pages.
State the meaning of Object Representation The term object representation means "to represent object with the help of objects model symbols". Implementing objects is too simp
What are the two distinct aspects to the implementation of associations? i) It is required to define data declarations which will enable details of actual links to be stored. I
Database Administrator One of the main perpose for having the database management system is to have control of both data or programs accessing that data. The person having li
CREATE TABLE prodtrans ( pno number (4) ptype char (1) CHECK (ptype in ('I','R','S')), qty number (5) FOREIGN KEY pno REFERENCES product (pno) ON DELETE CASCADE);
In tuple relational calculus P1 → P2 is equivalent to ? A In tuple relational calculus P1→ P2 is equivalent to ¬P1 V P2. (The logical implication expression A B, meaning
Winfield is a small city with a population of 22,000 with buses serves three routes in Winfield and neighboring areas. As the city’s IT director, you have been asked to set up an i
Explain Deadlock detection and recovery Deadlock Detection - A deadlock is said to take place when there is a circular chain of transaction, every waiting for the release of a
Different stages of DDLC ?
List any two significant differences between a file processing system and a DBMS. File Processing System vs. DBMS Data Independence - Data independence is the capacity t
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