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What is an object ID?
Each class-derived table has an ID for primary key, one or more object IDs form primary key for association derived tables. An object ID is equivalent database construct.
can you please explain with the help of suitable example the difference between conflict equivalence and conflict serializability?
This project requires you to create a database design. Your design will be documented in a set of Entity-Relationship diagrams. Draw a set of Entity-Relationship diagrams to mode
Given the subsequent relations: vehicle (reg_no, make, colour) Person (eno, name, address) Owner (eno, reg_no) Write expressions
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 garbage collection. Garbage may be formed also as a side effect of crashes. Periodically, it is essential to find all the garbage pages and to add them to the list of fr
Consider an information system designed for an online company which provides IT products and services. These include desktops, laptops, networking products, IT books, parts, and te
1. Which model is used to store data in tree structures Ans: Hierarchical model is used to store data in tree structures
Define an operator that a Relational Algebra does not have Ans: Relational Algebra does not have Aggregation operators.
In a Hierarchical model of data records are organized ? In the hierarchical model of data records are organized as Tree structure.
explain the mapping constraints
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