open source database solution

8/4/2019 Open Source Database Solution

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Open Source Database Solution:

mySQL

Thomas Cagandahan de Dios

IT Consultant


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Outline

Background of mySQL ANSI SQL Standards mySQL and other Databases

Operating Systems Supported Connecting to and Disconnecting from the

Server

Creating and Using Database mySQL in Batch Mode Database Administration


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Outline

Column Data Types DDL (Data Definition Language) specifics mySQL Table Types

mySQL ODBC Support Laboratory Exercise


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Background of mySQL

MySQL, the most popular Open Source SQLdatabase, is developed, distributed andsupported by MySQL AB.

MySQL AB is a commercial company

founded by the MySQL developers thatbuilds its business providing servicesaround the MySQL database


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ANSI SQL Standards

Entry-level SQL92. ODBC levels 0-3.51. Provides Extensions on SQL92

Aims to achieve SQL-99


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mySQL and other DatabasesProprietary Databases

MS SQL Server Powersofts Sybase

Oracle Informix NCRs TeradataOpen-Source Databases

mySQL PostgreSQL mSQL


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Operating Systems Supported

AIX 4.x, 5.x with native threads. BSDI 2.x with the MIT-pthreads package. BSDI 3.0, 3.1 and 4.x with native threads. DEC Unix 4.x with native threads. FreeBSD 2.x with the MIT-pthreads package. FreeBSD 3.x and 4.x with native threads. HP-UX 10.20 with the DCE threads or the MIT-

pthreads package.

HP-UX 11.x with the native threads.


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Operating Systems Supported

Linux 2.0+ with LinuxThreads 0.7.1+ or glibc2.0.7+.

Mac OS X. NetBSD 1.3/1.4 Intel and NetBSD 1.3 Alpha

(Requires GNU make). OpenBSD > 2.5 with native threads. OpenBSD

mysql> quit or exit (to disconnect)


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Creating and Using Database

To show databases in the servermysql> SHOW DATABASES;

To use a database

mysql> USE test; To create a new databasemysql> CREATE DATABASE tellim;

To drop databasemysql> DROP DATABASE tellim;


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Creating and Using Database

To show tables in the databasemysql> SHOW TABLES;

To create a new tablemysql> CREATE TABLE student

(student_id VARCHAR(8),

student_name VARCHAR(20),

student_course VARCHAR(20));

To show tables structuremysql> DESC student;

To drop table

mysql> DROP TABLE student;


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mySQL in Batch Mode

shell> mysql -h host -u user -p < batch-fileEnter password: ********


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Database AdministrationGRANT priv_type [(column_list)] [, priv_type

[(column_list)] ...] ON {tbl_name | * | *.* | db_name.*}TO user_name [IDENTIFIED BY [PASSWORD]'password'] [, user_name [IDENTIFIED BY 'password']...] [REQUIRE NONE | [{SSL| X509}] [CIPHER cipher

[AND]] [ISSUER issuer [AND]] [SUBJECT subject]][WITH [GRANT OPTION | MAX_QUERIES_PER_HOUR #| MAX_UPDATES_PER_HOUR # |MAX_CONNECTIONS_PER_HOUR #]]

REVOKE priv_type [(column_list)] [, priv_type[(column_list)] ...] ON {tbl_name | * | *.* | db_name.*}FROM user_name [, user_name ...]

FLUSH PRIVILEGES


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Column Data Types

Numeric Types:NUMERIC (m, d)

DECIMAL (m, d)

INTEGER (n)SMALLINT (n)

FLOAT (x)

REAL (m, d)DOUBLE (m, d)

Date and Time Types:DATETIME

DATE

TIMESTAMPTIME

YEAR

String types:

CHAR

VARCHAR


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Data Definition LanguageCREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name

[(create_definition,...)] [table_options][select_statement] or

CREATE [TEMPORARY] TABLE [IF NOT EXISTS] tbl_name

LIKE old_table_name;

create_definition: col_name type [NOT NULL | NULL] [DEFAULTdefault_value] [AUTO_INCREMENT] [PRIMARY KEY][reference_definition] or PRIMARY KEY (index_col_name,...) or KEY[index_name] (index_col_name,...) or INDEX [index_name](index_col_name,...) or UNIQUE [INDEX] [index_name](index_col_name,...) or FULLTEXT [INDEX] [index_name](index_col_name,...) or [CONSTRAINT symbol] FOREIGN KEY[index_name] (index_col_name,...) [reference_definition] or CHECK(expr)


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Data Definition LanguageALTER [IGNORE] TABLE tbl_name alter_spec [, alter_spec ...]

alter_specification: ADD [COLUMN] create_definition [FIRST | AFTERcolumn_name ] or ADD [COLUMN] (create_definition,create_definition,...) or ADD INDEX [index_name] (index_col_name,...)or ADD PRIMARY KEY (index_col_name,...) or ADD UNIQUE[index_name] (index_col_name,...) or ADD FULLTEXT [index_name](index_col_name,...) or ADD [CONSTRAINT symbol] FOREIGN KEY[index_name] (index_col_name,...) [reference_definition] or ALTER[COLUMN] col_name {SET DEFAULT literal | DROP DEFAULT} orCHANGE [COLUMN] old_col_name create_definition [FIRST | AFTERcolumn_name] or MODIFY [COLUMN] create_definition [FIRST | AFTER

column_name] or DROP [COLUMN] col_name or DROP PRIMARY KEY orDROP INDEX index_name or DISABLE KEYS or ENABLE KEYS or RENAME[TO] new_tbl_name or ORDER BY col or table_options


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Data Definition Language

RENAME TABLE tbl_name TO new_tbl_name[, tbl_name2 TO new_tbl_name2,...]

DROP [TEMPORARY] TABLE [IF EXISTS] tbl_name [,tbl_name,...] [RESTRICT | CASCADE]

CREATE [UNIQUE|FULLTEXT] INDEX index_nameON tbl_name (col_name[(length)],... )

DROP INDEX index_name ON tbl_name


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mySQL Table Types

transaction-safe tables(InnoDB and BDB)

not transaction-safe tables(HEAP, ISAM, MERGE, and MyISAM).


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mySQL Table TypesAdvantages of transaction-safe tables (TST): Safer. Even if MySQL crashes or you get hardware

problems, you can get your data back, either byautomatic recovery or from a backup + the transactionlog.

You can combine many statements and accept these allin one go with the COMMIT command. You can execute ROLLBACK to ignore your changes (if

you are not running in auto-commit mode). If an update fails, all your changes will be restored.

(With NTST tables all changes that have taken place arepermanent)

Can provide better concurrency if the table gets manyupdates concurrently with reads.

Note that to use InnoDB tables you have to use at leastthe innodb_data_file_path startup option.


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mySQL Table TypesAdvantages of not transaction-safe tables (NTST): Much faster as there is no transaction overhead. Will use less disk space as there is no overhead of

transactions. Will use less memory to do updates.


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For technical support

and inquiries:[email protected]

MAGIS DEI INFOTECH SOLUTIONS
mailto:[email protected]:[email protected]

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