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Ok i got a good picture of it. I will leave the question open for a while then close it....Thanks! A+
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Ok i got a good picture of it. I will leave the question open for a while then close it....Thanks! A+

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Thanks and glad to have helped.<br />
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I got Student table and Country table<br />
<br />
Student {StudentID, Name, CountryID}<br />
Country {CountryID, CountryName}<br />
<br />
1. This means every student can have several countries while every country can not have several students! I do not get it. Does the above structure mean no two students can have same country name?<br />
<br />
Student {StudentID, Name}<br />
Country {CountryID, CountryName, StudentID}<br />
<br />
Every country name can have several students a student can not have several countries. Can you explain please...<br />
<br />
It's funny that it sounds simple but my mind does not seem having the sense of getting it...weird<br />

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I got Student table and Country table

Student {StudentID, Name, CountryID}
Country {CountryID, CountryName}

1. This means every student can have several countries while every country can not have several students! I do not get it. Does the above structure mean no two students can have same country name?

Student {StudentID, Name}
Country {CountryID, CountryName, StudentID}

Every country name can have several students a student can not have several countries. Can you explain please...

It's funny that it sounds simple but my mind does not seem having the sense of getting it...weird


Simple Question about One-To-Many Relationship between Student and Country Tables - RDBMS SQL

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Oracle Database

SQL (Structured Query Language) is designed to be used in conjunction with relational database products as of a means of working with sets of data. SQL consists of data definition, data manipulation, and procedural elements. Its scope includes data insert, query, update and delete, schema creation and modification, and data access control.