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rajputved
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Self Doubt on DBMS
Please tell if this formula is correct: Minimum number of tables for an ER Diagram = Number of Weak Entities + Number of Strong Entities + Number of Composite Attributes + Number of Multivalued attributes + Number of M:N Relationships - (Number of M:N Relationships with total participation on atleast 1 side + Number of non-M:N Relationships with total participation on both sides)
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Prince Sindhiya
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Match the following: (a) Create (i) The E-R Model (b) Select (ii) Relationship Model (c) Rectangle (iii) DDL (d) Record (iv) DML in answer a is matched with dml but what i know ---select is for data retrival and insert update delete are for DML
Prince Sindhiya
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Prince Sindhiya
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Dec 16, 2018
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Zeal Test Series 2019: Databases - Er Diagram
IN THESE QUESTION WHAT I DID IN 2) there is Multi valued atrribute so we will create one table for it with ab as key NAMED it AS(BETA) table and 3) is same where b1 is partial key and depending on first tables primary key so both are equivalent please tell me that i am right or not answer is C)
Prince Sindhiya
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Harsh Kumar
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Dec 11, 2018
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MadeEasy Workbook: Databases - Er Diagram
The minimum number of tables needed to represent M,N,P,R1,R2 is … The given ans is 2. I think the ans should be 3.
Harsh Kumar
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