- What is an inner join? Use the Venn Diagram to help, but allows you to bring in extra columns from another table so long as there is a key to match both tables
- An inner join is the intersection of data from both table A and table B
- What’s a left join, right join?
- Left joins, right joins are basically outer joins that get all the data from both table A and table B plus the data from either the left (table A) or right (table B)
- What is an outer join?
- A full outer join (besides left/right) gets all table data from both A & B tables
- What’s a trigger?
- What’s a foreign key?
- What’s the purpose of an index?
- What’s normalization?
- What is a trigger? What's an event?
- Largest db you worked with?
- What is ORM?
- How would you optimize a database?
- Indexes
- Redundancy