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ASSIGNMENT
PROGRAM BSc IT
SEMESTER THIRD
SUBJECT CODE & NAME BT0075,RDBMS AND MYSQL
CREDIT 4
BK ID B1003
MAX.MARKS 60
Q.1 Define and explain MySQL database. Explain the following features of MySQL:
1. Internals and portability 2. Statements and functions.
Ans : MySQL database:-
MySQL is a fast, easy-to-use RDBMS being used for many small and big businesses. MySQL is
developed, marketed, and supported by MySQL AB, which is a Swedish company. MySQL is
becoming so popular because of many good reasons:
 MySQL is released under an open-source license. So you have nothing to pay to use it.
 MySQL is a very powerful program

Q.2 Explain the char and varchar and the set data types of mysql.
Ans: The CHAR and VARCHAR types are similar, but differ in the way they are stored and
retrieved. They also differ in maximum length and in whether trailing spaces are retained.

2. The CHAR and VARCHAR types are declared with a length that indicates the maximum number
of characters you want to store. For example, CHAR (30) can hold up to 30 characters.
The length of a CHAR column is fixed to the
Q.3 1. Explain insert statement with example.
2. Create table CUSTOMERS with fields – ID, name, age, address and salary and insert records
in the table (insert at least five records.)
Ans: insert statement:
The INSERT statement inserts rows into a table, 4 nickname, or view, 4 or the underlying
tables, nicknames, or views of the specified 4 full select. Inserting a row into a nickname inserts
the row into the data source object to which the nickname refers. Inserting a row into a view
also inserts the row into the table on which the view is based, if no INSTEAD OF trigger is
defined for the insert operation on this view. If such a trigger is defined, the trigger will be
executed instead.
Q.4 What is use of Join statement in MySQL? Also explain the types of joins in MySQL
Ans: of Join statement in MySQL: -
The MySQL INNER JOIN clause matches rows in one table with rows in other tables and allows
you to query rows that contain columns from both tables.
The MySQL INNER JOIN clause an optional part of the SELECT statement. It appears
immediately after the FROM clause.
Q.5 Explain Row subqueries and subqueries in the FORM clause.
Ans Row subqueries:-
A single row subquery returns zero or one row to the outer SQL statement. You can place a
subquery in a WHERE clause, a HAVING clause, or a FROM clause of a SELECT statement.
We can place a subquery in the WHERE clause of another query. Let's take an example of a
query that contains a subquery placed in its WHERE clause

3. Q.6 List all the options for mysqld security and explain any eight of them.
Ans: The most common methods are to provide options in an option file or on the command
line. However, in most cases it is desirable to make sure that the server uses the same options
each time it runs. The best way to ensure this is to list them in an option file.
mysqld reads options from the [mysqld] and [server] groups. mysqld_safe reads options from
the [mysqld], [server], [mysqld_safe], and [safe_mysqld] groups. mysql.server reads options
from the [mysqld] and [mysql.server] groups.
Dear students get fully solved assignments
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