1. CSCI 6315 Applied Database Systems – Exercise (3)
Xiang Lian
The University of Texas Rio Grande Valley
Edinburg, TX 78539

2. SQL (1) Find ids of sailors who’ve reserved boat with bid 103 SQL:
Sailors (sid, sname)
Reserves (sid, bid, date)
Boats (bid, bname, color)
SQL:

3. SQL (2) Find the names of sailors who’ve reserved boat with bid 103
Sailors (sid, sname)
Reserves (sid, bid, date)
Boats (bid, bname, color)
SQL:

4. SQL (3) Find the names of sailors who’ve reserved a red boat SQL:
Sailors (sid, sname)
Reserves (sid, bid, date)
Boats (bid, bname, color)
SQL:

5. SQL (4)
Find the names of sailors who’ve reserved a red or a green boat
Sailors (sid, sname)
Reserves (sid, bid, date)
Boats (bid, bname, color)
SQL:

6. SQL (5)
Find the names of sailors who’ve reserved a red and a green boat
Sailors (sid, sname)
Reserves (sid, bid, date)
Boats (bid, bname, color)
SQL:

7. SQL (6)
Find the ids of sailors who have made at least two reservations on the same date
Sailors (sid, sname)
Reserves (sid, bid, date)
Boats (bid, bname, color)
SQL: