Top 100 DBMS MCQ | Database Management System MCQ
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- Опубликовано: 8 сен 2024
- In this Video, You will learn Most Important DBMS MCQs Questions with Answers
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DCL....Data Control Language
RDBMS...... Relational database Management system
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Q79) wrong correct answer is D) Candidate key
A candidate key is a set of columns in a table that uniquely identifies every row within that table. Each candidate key must satisfy two properties: uniqueness and minimality.
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Some of the answers are incorrect ma'am. like what is the oldest database model? It is hierarchical but you said something else. please provide such productive videos after much proofing reading. thank you for the video ma'am. correct me if I am wrong
The IDS system, which is often presented as the first DBMS, was created by Charles Bachman and was released in 1964. It had a “network” data model, which means that data was stored in a graph-like structure of linked nodes (we will refer to network subclass as NnDBMS later).
Candidate key is a single key or a group of multiple keys that uniquely identify rows in a table
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DCL Data control language.
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Full Form Of DCL is a Data Control Language
Q71) answer is wrong: correct answer is C) Hierarchical
The oldest DB model is the Hierarchical model. It was developed in the 1960s and was one of the earliest models for organizing and representing data in a database. In the Hierarchical model, data is structured in a tree-like manner, where each record (or data element) has a one-to-many relationship with the records below it.
Yes q. No(71) ko c no right answer
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Ek teacher Banna bhot he zimmedari ki baat hoti hai... Agar aap galat padha dete ho toh ho sakta hai uss ek galat zankari se kisi bacche ka selection na ho ...Q71
The IDS system, which is often presented as the first DBMS, was created by Charles Bachman and was released in 1964. It had a “network” data model, which means that data was stored in a graph-like structure of linked nodes (we will refer to network subclass as NnDBMS later).
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DCL- data control language
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Data control language
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Relational database management system
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DCL-DATA CONTROL LANGUAGE
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In Question 16 I think correct answer will be D.
Net re dekhidia
79 -> a set of attributes which identifies other non prime attributes is key!
But its min attribute set is candidate key!
So why super key?
Hierarchical databases are the oldest database models
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DCL= Data Control Language.
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Could you please share the pdf with us
Please provide pdf
snswer of 44 is dml or ddl?
Data Manipulation Language
Therefore, the Data Manipulation Language is used in the application programs while requesting the data from the database management system.
27:18 question no 53 wrong answer
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Q71 Wrong Answer
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DCL=Data control longuage
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answer of 44 is incorrect?
Where is your pdf i want to download
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Some answers are wrong
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Data control language
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Data control language
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