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The Logical DBMS Architecture
Database Management Systems are very difficult, sophisticated software applications that give reliable management of huge amounts of data. To explain general database concepts and the structure and capabilities of a DBMS better, the structural design of a typical database management system should be studied.
There are two dissimilar ways to look at the architecture of a DBMS: the physical DBMS architecture and the logical DBMS architecture. The physical architecture is deals with the software components that create up a DBMS while the logical architecture deals with the way data is stored and presented to users.
What are the advantages of creating a table from existing table?
Example -Find the employee name, salary, department number and average salary of his/her department, for those employees whose salary is more than the average salary of that depart
Redo Logs: Any database must have minimum two redo logs. These are the rules for the database; the redo logs record all modifies to the system objects or user objects. If any type
Consider a research paper submission process. The process starts when an author submits a draft research paper (the paper may have up to 3 authors) to the chair of the organizing c
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1. Determine that the Checkpoints are a part of Ans: Checkpoints are a part of Recovery measures
Lock Based Protocol A lock is nothing but a mechanism that tells the DBMS whether a particular data item is being used by any transaction for read/write purpose. As there are t
What is meant by normalization of data? It is a process of examining the given relation schemas based on their Functional Dependencies (FDs) and primary key to achieve the prop
Define the terms i) Entity type ii) Entity set Entity type: An entity type describes a collection of entities that have the similar attributes. Entity set: The set of all en
What is the difference among a database schema and a database state? The collection of information stored in database at particular moment in time is known as database state a
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