CS403 - Database Management System Solution GDB 2022

This is CS403 GDB No 1 Solution 2022CS403 Solution GDB 2022 l CS403 GDB Solution 2022. We are sharing with you here Virtual University GDB Solutions l CS403 – Database Management System GDB Solution 2022



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How to Submit GDB Complete Guideline

Consider a scenario, there are three tables name ‘X’, ‘Y ‘and’ Z’ with schemes X (u, v, w), Y (l, u, m, n, o, p) and Z (r, s, t, u, q), These (Search on Google: Raise For Success) tables have a common attribute or field. We want to retrieve (Follow us on Twitter) the data from these tables.

In this scenario, discuss which join operation can help to retrieve the (Subscribe our YouTube Channel V-Expert Services) records from multiple tables. Justify your answer with at least two solid arguments. 

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Answer:

I prefer to use INNER join for this type of scenario its logical (Search on Google: Raise For Success) arguments are as follows:

  • The INNER JOIN Selects all rows from all participating tables as long (Subscribe our YouTube Channel V-Expert Services) as there is a match between the columns.
  • INNER JOIN is for clarity. Using Where as in your second example (Follow us on Twitter) can get lost in more complex queries, making it difficult to determine how your tables are joined and make it more difficult to troubleshoot problems.
  • INNER JOIN is faster to pull more rows.
  • JOIN works by concentrating the operation on the result of the first (Search on Google: Raise For Success) all tables, any subsequent joins would concentrate joining on the in memory result of the first joined tables and so on less read write needle movement, thus faster.

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