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3 Comments
Well,
MySQL is Open Source, while Oracle, Sybase, DB2, SqlServer are not. Coding
MySQL does conform to ANSI Entry level SQL92. ODBC levels 0-3.51.
However, I feel MySQL lacks some major features that other database vendors currently support:
* does not support Sub-selects
* does not support views (planned for next release)
* does not support Foreign keys, including cascading delete (version 4.1 maybe)
* does not support stored procedures & triggers-- lacks an internal procedural language
* does not support cursors ( maybe in version 4.1 or 4.2 )
* does not support * MINUS, INTERSECT and FULL OUTER JOIN.
* does not support-- Character set casts and syntax for handling multiple character sets. (hoped for in version 4.1)
* does not have * true VARCHAR support (There is already support for this in MyISAM , planned for version 4.1)
I liked on comment in their manual:
things to add: * Oracle like CONNECT BY PRIOR ... to search hierarchy structures. *
You can read most of this in their manual at:
http://www.mysql.com/documentation/mysql/bychapter/manual_Introduction.html#Compatibility
Section 1.7 thru 1.9
Hope this answers your question
sincerely,
dBalaski
MySQL is Open Source, while Oracle, Sybase, DB2, SqlServer are not. Coding
MySQL does conform to ANSI Entry level SQL92. ODBC levels 0-3.51.
However, I feel MySQL lacks some major features that other database vendors currently support:
* does not support Sub-selects
* does not support views (planned for next release)
* does not support Foreign keys, including cascading delete (version 4.1 maybe)
* does not support stored procedures & triggers-- lacks an internal procedural language
* does not support cursors ( maybe in version 4.1 or 4.2 )
* does not support * MINUS, INTERSECT and FULL OUTER JOIN.
* does not support-- Character set casts and syntax for handling multiple character sets. (hoped for in version 4.1)
* does not have * true VARCHAR support (There is already support for this in MyISAM , planned for version 4.1)
I liked on comment in their manual:
things to add: * Oracle like CONNECT BY PRIOR ... to search hierarchy structures. *
You can read most of this in their manual at:
http://www.mysql.com/documentation/mysql/bychapter/manual_Introduction.html#Compatibility
Section 1.7 thru 1.9
Hope this answers your question
sincerely,
dBalaski
From what I remember when I had a quick look at it a while back mSQL is really designed as a lightweight database engine with low system overheads, designed for fast retrieval of small amounts of data. It doesn't offer full functionality and only supports a subset of ANSI SQL.
The 'Big Databases' are really designed for complex applications run in a multi user environment where system availability/data integrity and high performance are vital, hence the high price tags.
For things like driving dynamic web sites (especially when they are of a non transactional nature) and running desktop applications things like mSQL and MySQL are fine.
If you want to run your company's financial system for 1000 users 24 hours a day, you will need one of the big boys.
Carl
The 'Big Databases' are really designed for complex applications run in a multi user environment where system availability/data integrity and high performance are vital, hence the high price tags.
For things like driving dynamic web sites (especially when they are of a non transactional nature) and running desktop applications things like mSQL and MySQL are fine.
If you want to run your company's financial system for 1000 users 24 hours a day, you will need one of the big boys.
Carl
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