This is a step by step slides to study servlet, all the concepts which are required for a servlet are present in this ppt. The whole Servlet is divided into SESSIONS.

1. SESSION – 13
By→ Anuj Kumar Singh

2. Servlet CRUD
1. A CRUD (Create, Read, Update and Delete) application is the most
important application for any project development. In Servlet, we can
easily create CRUD application.
2. The CRUD operation is performed using the Servlet and Database,
the user need to create schema(Database) and the table with the
fields defined in HTML form.
3. Any Database can be chosen based such as MySQL, SQL, Oracle
etc.
4. The Database operation should be performed using SQL queries
only.

3. Example a. index.html

4. b. NewServlet.java

5. Output

6. SQL Queries
1. Create Table 
CREATE TABLE table_name (
column1 datatype,
column2 datatype,
column3 datatype,
....
);
2. Insert 
INSERT INTO table_name (column1, column2, column3, ...)
VALUES (value1, value2, value3, ...);
or
INSERT INTO table_name
VALUES (value1, value2, value3, ...);

7. 3. Read or Select 
SELECT column1, column2, ...
FROM table_name;
or
SELECT * FROM table_name;
4. Update Query 
UPDATE table_name
SET column1 = value1, column2 = value2, ...
WHERE condition;

8. 5. Delete 
DELETE FROM table_name WHERE condition;