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If you're looking for current Mysql interview questions and answers, you've come to the right place! This Latest 2024 Question List will provide you with a comprehensive list of trending Mysql interview questions and answers asked in Top Companies interview round.

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#	Question	Options	Answer
1	SQL data definition commands make up a(n) ________	DDL DML HTML XML	DDL
2	ORDER BY can be combined with the SELECT statements.	True False Not Sure None	True
3	Which of the following is true concerning triggers?	You do not create them with SQL. They execute against only some applications that access a database. They have an event, condition, and action. They cannot cascade (cause another trigger to fire).	They have an event, condition, and action.
4	The following SQL is which type of join: SELECT CUSTOMER_T. CUSTOMER_ID, ORDER_T. CUSTOMER_ID, NAME, ORDER_ID FROM CUSTOMER_T,ORDER_T	Equi-join Natural join Outer join Cartesian join	Cartesian join
5	How many tables may be included with a join?	One Two Three All of the above	All of the above
6	Which of the following is a correlated subquery?	Uses the result of an inner query to determine the processing of an outer query. Uses the result of an outer query to determine the processing of an inner query. Uses the result of an inner query to determine the processing of an inner query. Uses the result of an outer query to determine the processing of an outer query.	Uses the result of an outer query to determine the processing of an inner query.
7	RDBMS is an acronym for	Relational Database Relational Database Merging System Relational Database Management System Relational Database Manipulation System	Relational Database Management System
8	A query is also a type of	Filter Database Form Report	Filter
9	A row in a table represents	Record Field File Column	Record
10	The entire collection of related data in a place is referred to as a	Table Cell Row Column	Table
11	The process of joining data from two or more tables of the same or different databases is called	Filtering Searching Sorting Merging	Merging
12	The process of limiting the information that appears on the screen is	Sorting Filtering Searching Merging	Filtering
13	You can add a row using SQL in a database with which of the following?	ADD CREATE INSERT MAKE	INSERT
14	The command to remove rows from a table CUSTOMER is:	REMOVE FROM CUSTOMER DROP FROM CUSTOMER DELETE FROM CUSTOMER WHERE UPDATE FROM CUSTOMER	DELETE FROM CUSTOMER WHERE
15	The SQL WHERE clause	limits the column data that are returned. limits the row data are returned. Both A and B are correct. Neither A nor B are correct.	limits the row data are returned.
16	The wildcard in a WHERE clause is useful when?	An exact match is necessary in a SELECT statement An exact match is not possible in a SELECT statement An exact match is necessary in a CREATE statement An exact match is not possible in a CREATE statement	An exact match is not possible in a SELECT statement
17	A view is which of the following?	A virtual table that can be accessed via SQL commands A virtual table that cannot be accessed via SQL commands A base table that can be accessed via SQL commands A base table that cannot be accessed via SQL commands	A virtual table that can be accessed via SQL commands
18	The command to eliminate a table from a database is:	REMOVE TABLE CUSTOMER DROP TABLE CUSTOMER DELETE TABLE CUSTOMER UPDATE TABLE CUSTOMER	DROP TABLE CUSTOMER
19	ON UPDATE CASCADE ensures which of the following?	Normalization Data Integrity Materialized Views All of the above	Data Integrity
20	Which of the following is valid SQL for an Index?	CREATE INDEX ID CHANGE INDEX ID ADD INDEX ID REMOVE INDEX ID	CREATE INDEX ID
21	The SQL keyword(s) ________ is used with wildcards.	LIKE only IN only NOT IN only IN and NOT IN	LIKE only
22	Which of the following is the correct order of keywords for SQL SELECT statements?	SELECT, FROM, WHERE FROM, WHERE, SELECT WHERE, FROM,SELECT SELECT,WHERE,FROM	SELECT, FROM, WHERE
23	The result of a SQL SELECT statement is a	report form file table	table
24	Which of the following are the five built-in functions provided by SQL?	COUNT, SUM, AVG, MAX, MIN SUM, AVG, MIN, MAX, MULT SUM, AVG, MULT, DIV, MIN SUM, AVG, MIN, MAX, NAME	COUNT, SUM, AVG, MAX, MIN
25	The HAVING clause does which of the following?	Acts like a WHERE clause but is used for groups rather than rows. Acts like a WHERE clause but is used for rows rather than columns. Acts like a WHERE clause but is used for columns rather than groups. Acts EXACTLY like a WHERE clause.	Acts like a WHERE clause but is used for groups rather than rows.
26	To remove duplicate rows from the results of an SQL SELECT statement, the ________ qualifier specified must be included.	ONLY UNIQUE DISTINCT SINGLE	DISTINCT
27	Which of the following do you need to consider when you make a table in SQL?	Data types Primary keys Default values All of the above	All of the above
28	SQL query and modification commands make up a	DDL DML HTML XML	DML
29	When three or more AND and OR conditions are combined, it is easier to use the SQL keyword(s)	LIKE only IN only NOT IN only Both IN and NOT IN	Both IN and NOT IN
30	Which one of the following sorts rows in SQL?	SORT BY ALIGN BY ORDER BY GROUP BY	ORDER BY
31	To define what columns should be displayed in an SQL SELECT statement:	use FROM to name the source table(s) and list the columns to be shown after SELECT use USING to name the source table(s) and list the columns to be shown after SELECT use SELECT to name the source table(s) and list the columns to be shown after USING use USING to name the source table(s) and list the columns to be shown after WHERE	use FROM to name the source table(s) and list the columns to be shown after SELECT
32	SQL can be used to:	create database structures only query database data only modify database data only All of the above can be done by SQL	All of the above can be done by SQL
33	The SQL statement that queries or reads data from a table is	SELECT READ QUERY None of the above is correct	SELECT
34	The SQL keyword BETWEEN is used:	for ranges. to limit the columns displayed. as a wildcard. None of the above is correct.	for ranges.
35	A subquery in an SQL SELECT statement:	can only be used with two tables. can always be duplicated by a join. has a distinct form that cannot be duplicated by a join. cannot have its results sorted using ORDER BY.	has a distinct form that cannot be duplicated by a join.
36	The primary key is selected from the:	composite keys. determinants. candidate keys. foreign keys.	candidate keys.
37	Which of the following is a group of one or more attributes that uniquely identifies a row?	Key Determinant Tuple Relation	Key
38	When the values in one or more attributes being used as a foreign key must exist in another set of one or more attributes in another table, we have created	transitive dependency. insertion anomaly. referential integrity constraint. normal form.	referential integrity constraint.
39	A relation is considered a:	Column one-dimensional table two-dimensional table three-dimensional table	two-dimensional table
40	In the relational model, relationships between relations or tables are created by using:	composite keys. determinants. candidate keys. foreign keys.	foreign keys.
41	A functional dependency is a relationship between or among:	tables. rows. relations. attributes.	attributes.
42	Which of the following is not a restriction for a table to be a relation?	The cells of the table must contain a single value. All of the entries in any column must be of the same kind. The columns must be ordered. No two rows in a table may be identical.	The columns must be ordered.
43	A key:	must always be composed of two or more columns. can only be one column. identifies a row. identifies a column.	identifies a row.
44	An attribute is a	column of a table. two dimensional table. row of a table. key of a table.	column of a table.
45	Using the SQL GROUP BY phrase with a SELECT statement can help detect which of the following problems?	The multivalue, multicolumn problem The inconsistent values problem The missing values problem The general-purpose remarks column problem	The inconsistent values problem
46	Most of the time, modification anomalies are serious enough that tables should be normalized into:	1NF 2NF 3NF BCNF	BCNF
47	Which of the following data constraints would be used to specify that the value of cells in a column must be one of a specific set of possible values?	A domain constraint A range constraint An intrarelation constraint An interrelation constraint	A domain constraint
48	A primary key should be defined as:	NULL NOT NULL Either of the above can be used None of the above are correct	NOT NULL
49	Which of the following column properties would be used to specify that cells in a column must contain a monetary value?	Null status Data type Default value Data constraints	Data type
50	A foreign key is:	a column containing the primary key of another table. used to define data types. used to define null status. all of the above are above correct.	a column containing the primary key of another table.
51	Which of the following columns is(are) are required in a table?	A foreign key An alternate key A primary key A surrogate key.	A primary key
52	In a 1:1 relationship, the foreign key is placed in:	either table without specifying parent and child tables. the parent table. the child table. either the parent table or the child table.	either table without specifying parent and child tables.
53	The identifier of an entity will become the ________ of the new table.	foreign key main attribute primary key identity key	primary key
54	A unique, DBMS-supplied identifier used as the primary key of a relation is called a	primary key. foreign key. composite key. surrogate key.	surrogate key.
55	Each entity is represented as a(n)	tuple. table. attribute. file.	table.
56	What type of join is needed when you wish to include rows that do not have matching values?	Equi-join Natural join Outer join All of the above.	Outer join
57	Which of the following is true concerning a procedure?	You do not create them with SQL. They do not need to have a unique name. They include procedural and SQL statements. They are the same thing as a function.	They include procedural and SQL statements.
58	A CASE SQL statement is which of the following?	A way to establish an IF-THEN-ELSE in SQL. A way to establish a loop in SQL. A way to establish a data definition in SQL. All of the above.	A way to establish an IF-THEN-ELSE in SQL.
59	Which of the following statements is true concerning routines and triggers?	Both consist of procedural code. Both have to be called to operate. Both run automatically. Both are stored in the database.	Both consist of procedural code.
60	What type of join is needed when you wish to return rows that do have matching values?	Equi-join Natural join Outer join All of the above.	All of the above.
61	What is the process of defining more than one method in a class differentiated by method signature?	Function overriding Function overloading Function doubling None of the mentioned	Function overloading

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A Database administrator (DBA) is a professional who is responsible for the performance, security, and integrity of a database. They are responsible for the design, installation, maintenance, and troubleshooting of databases. They also monitor the performance and capacity of the database, and they make sure that the database is backed up and recoverable in case of a disaster.

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• Database concepts such as tables, rows, columns, keys, relationships, normalization, and indexes
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