Query caching, available with the version 4.0.1 release, greatly improves the performace of selection queries by storing query results in memory and retrieving those results directly, rather than repeatedly querying the database for the same result set.

1. MyISAM
2. IBMDB2I
3. InnoDB
4. MEMORY
5. MERGE
6. FEDERATED
7. ARCHIVE
8. CSV
9. EXAMPLE
10. BLACKHOLE

MyISAM:
1. MyISAM become MYSQL's default storage engine as of version 3.23. 
2. MyISAM tables are operating system independent.
3. Capable of sorting more data, but at a cost of less storage space than counterpart.
4. Three MyISAM formats: static, dynamic, and compress are available.

InnoDB
1. Robust transactional storage engine
2. Working with large data stores.
3. It has been available to MySQL users since version 3.23 and effective solution for transactional applications

MEMORY:
1. To attain the fastest response time possible, the logical storage media is system memory.
2. Sorting table data in memory does indeed offer impressive performance.
3. If the mysqld daemon crashes, all MEMORY data will be lost.

MySQL broken down datatypes in three broad categories: a) Date and time b) Numeric data types c) String data types

a) Data types in Date and time  category:
1. DATE
2. DATETIME
3. TIME
4. TIMESTAMP
5. YEAR

b) Data types in Numeric  category:
1. BOOL, BOOLEAN
2. BIGINT
3. INT
4. MEDIUMINT
5. SMALLINT
6. TINYINT
7. DECIMAL
8. DOUBLE
9. FLOAT ([M,D])
10. FLOAT (precision)

c) Data types in String category:
1. CHAR
2. VARCHAR
3. LONGBLOB
4. LONGTEXT
5. MEDIUMBLOB
6. MEDIUMTEXT
7. BLOB
8. TEXT
9.TINYBLOB
10. TINYTEXT
11. ENUM
12. SET

MySQL supported data type attributes are:
1. AUTO_INCREMENT
2. BINARY
3. DEFAULT
4. INDEX
5. NATIONAL
6. NOT NULL
7. NULL
8. PRIMARY KEY
9. UNIQUE
10. ZEROFILL