From 872eef6144ac055834e74f68a530ad5860bb4ced Mon Sep 17 00:00:00 2001
From: Aadit Agrawal <tech@aaditagrawal.com>
Date: Tue, 4 Feb 2025 15:18:32 +0530
Subject: [PATCH] Update DBMS/SQL/Week5/writeup.md

---
 DBMS/SQL/Week5/writeup.md | 77 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 77 insertions(+)

diff --git a/DBMS/SQL/Week5/writeup.md b/DBMS/SQL/Week5/writeup.md
index cba0a22..6881178 100644
--- a/DBMS/SQL/Week5/writeup.md
+++ b/DBMS/SQL/Week5/writeup.md
@@ -320,4 +320,81 @@ SQL> alter table text modify (booktitle varchar(20),publisher varchar(20),author
 Table altered.
 ```
 
+### ENTRY VALIDATION
+
+```sql
+
+SQL> select * from STUDENT;
+
+REGNO      NAME                 MAJOR                BDATE
+---------- -------------------- -------------------- ---------
+123        Ashwin               CCE                  17-OCT-03
+456        Aadit                CCE                  03-FEB-05
+789        Shrikanth            Environment          01-JAN-23
+101        Aarav                Environment          23-SEP-04
+567        Amogh                CSE                  03-MAR-04
+890        Saarthak             CSE                  03-JUL-04
+
+6 rows selected.
+
+SQL> select * from COURSE;
+
+   COURSE# CNAME                          DEPT
+---------- ------------------------------ ------------------------------
+      1101 DBMS                           ICT
+      1102 DAA                            ICT
+      2201 COA                            CS
+      2202 DSD                            CS
+      3301 MATH                           EVS
+      3302 POETRY                         EVS
+      3303 Random                         EVS
+
+7 rows selected.
+
+SQL> select * from TEXT;
+
+ BOOK_ISBN BOOKTITLE            PUBLISHER            AUTHOR
+---------- -------------------- -------------------- --------------------
+      1234 DBMS vol 1           Pearson              SS
+      4123 DBMS vol 2           Pearson              SS
+      5678 DAA vol 2            Pearson              Ramanujan
+      9012 COA vol 666          Cengage              Satan
+      3456 DSD vol 99           Penguin              Panda
+      7890 Math vol 66          U-Like               R S Aggrwal
+      1123 Poetry vol 0         OML                  Yahya Bootwaala
+      8901 Random vol 66        Classmate            R D Sharma
+
+8 rows selected.
+
+SQL> select * from BOOK_ADOPTION;
+
+   COURSE#        SEM  BOOK_ISBN
+---------- ---------- ----------
+      1101          1       1234
+      1102          2       4123
+      1102          2       5678
+      2201          3       9012
+      2202          4       3456
+      3301          5       7890
+      3302          6       1123
+      3303          7       8901
+
+8 rows selected.
+
+SQL> select * from ENROLL;
+
+REGNO                   COURSE#        SEM  BOOK_ISBN
+-------------------- ---------- ---------- ----------
+123                        1101          1       1234
+123                        1102          2       5678
+456                        1101          3       4123
+456                        2201          4       9012
+789                        3301          5       7890
+789                        3302          6       1123
+101                        3302          7       7890
+567                        2201          8       9012
+890                        2202          1       3456
+
+9 rows selected.
+```