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Application-based Question

Ruchi has created three tables as follows:

\begin{tabular}{|l|l|l|}
\hline
Table 1 & Table 2 & Table 3 \\
\hline
Emp_no, Emp_name & Designation, Department & Emp_no, Contact_no \\
\hline
\end{tabular}

Between which two tables can she create a relationship and why?

Sagot :

GinnyAnsweridn
To determine which two tables can have a relationship, we need to look at the common fields in the tables created by Ruchi. Let's examine the structure of each table.

Table 1:
- Fields: Emp_no, Emp_name

Table 2:
- Fields: Designation, Department

Table 3:
- Fields: Emp_no, Contact_no

By analyzing the field names in each table, we can see that:

- Table 1 has the fields: Emp_no, Emp_name
- Table 2 has the fields: Designation, Department
- Table 3 has the fields: Emp_no, Contact_no

To create a relationship between two tables, there must be a common field that can link the records from one table to the records from another table.

Looking at the fields, we notice that:

- Emp_no is present in both Table 1 and Table 3.

Since Emp_no is a common field between Table 1 and Table 3, Ruchi can create a relationship between these two tables based on the Emp_no field.

This relationship allows for linking employee information (from Table 1) with their contact information (from Table 3) using the Emp_no as the connecting key, thus integrating data between these tables.

In conclusion:

Table 1 and Table 3 can have a relationship based on the Emp_no field.
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