Notes/fundamentals
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Updates dbms notes.

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Tanmay 2022-09-10 15:55:44 +01:00
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database/notes/01-database-fundamentals.md
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@ -224,7 +224,13 @@ SELECT * FROM USERS WHERE age > 25;
``` ```
**Set operation - Subset** **Set operation - Subset**
![Set operation](media/subset.png) <p align="center">
<img
src="../media/subset.png"
alt="Set operation - Subset"
width="500"
/>
</p>
**SQL Query** **SQL Query**
```sql ```sql
@ -232,7 +238,13 @@ SELECT * FROM USERS WHERE age > 25 and age < 30;
``` ```
**Set operation - Subset** **Set operation - Subset**
![Set operation](media/subsets-and.png) <p align="center">
<img
src="../media/subsets-and.png"
alt="Set operation - Subset + AND"
width="500"
/>
</p>
### Relational Model ### Relational Model