VFP 愛用者社區

[Ruey]

【這是一位臺灣朋友對IB6與MS-SQL7.0之間作的比較】

Sorry to write in English, because I didn't install Win98 Chinese version.
It seems like not much comparison between MS-SQL 7.0 with Interbase 6.0.

Since Inprise annouced Interbase to be Open Source, I recently really have a chance to work more on the IBX component (Interbase Express).

The last project I did for a customer:
1. Delphi BDE MSSQL Driver, with MS-SQL 7.0
2. 1.5 GB of Source Data + 2 GB of processed data = 3.5 GB
3. HP LC3 Server With 4GB HDD (By Using NT4.0 Compress Directory to reduce data size)
4. 256 MB RAM
5. PIII 350 Single Processor
6. 10/100 base Switch

Now the month end takes 2-3 hours to finished the processing ! It seems to me the only way to increase the performance is to upgrade the Hardware !

As MS-SQL 7.0 support simultenous access to multiple Harddisk, Load Balance between multi-Processor, Cached Index to larger volume of Memory. With all these features, it seems like my hardware configuration isn't powerful enought to power up MS-SQL 7.0.

But lets be mroe reality ! we can't propose the customer to buy such a hardware, it takes 2 to 3 times expensive !

After I try on Interbase Express, it was great !

MS-SQL 7.0
===========
Using BDE / ADO Insert 1,000,000 records take more than 90 minutes Delete 1,000,000 records take more than 100 minutes, the delete operation don't using stored procedure ! (Only when using Truncate is much more faster !) When Start a transaction, commit as soon as possible, the longer I start, the slower it became !

Interbase
==========
1. Disable Force Write for the Database
2. Database Page Size 4096 KB
3. IBX With TIBSQL Direct Access
** All the test done under 1 Start and Commit Transaction !!

When Insert 1,000,000 records using Local Interbase, 8 min 42 sec !
When Insert 1,000,000 records using stored procedure 3 min 13 sec !
When Delete 1,000,000 records using TIBSQL in Client-Server 48 Sec !
When Edit 1,000,000 records by Stored procedure 3 min 47 sec !

With this few test, I regain confidence on Interbase, and they even support cascade delete and update. The trigger we can write code before or after (MS-SQL 7.0 Only Support After Action) Action.

For the first time I use MS-SQL 7.0, I find it easier to modify the table and store procedure, but with Interbase, I must plan it carefully, any changes to the table, stored procedure or any meta-data that need to recreation will not be allow if some-how any relation that current metadata refer by other metadata, this is consider the most troublesome thing when I use interbase.

But when I plan out my design properly, this problem has been minimized ! And I am sure as Interbase go Open source, there will be tools to overcome this problem.

MS-SQL 7.0 5 users (USD 1428) (Malaysia Selling price)
Interbase 6.0 (As far as I know - Free) (Open Source Licience Agreement)

MS-SQL 7.0 can handle very large volume of data (which is more than Terra byte), support replication, OLAP and full text search.

But for my requirement ->
1. Data volume up to 100 GB
2. User connection up to 100 users
3. Month End process for 100 GB of Data within 1 hour

I am sure Interbase is more than enough !

[garfield]

喔! 難怪我用SQL7才500MB就已經覺得比剛開始用的時候慢很多了, 不知道你是用那種後端資料庫呢?

[Ruey]

我使用的是VFP7.0+Ms SQL2000及InterBase6

目前正檢測將SQL2000資料庫轉入InterBase6的方式是否可行

[Ruey]

SQL2000資料庫轉入InterBase6
要注意的是預設值及PK,FK並不會幫你轉入

[richy2001]

請問我是用SQL2000的，其中DATABASE NAME、TABLE NAME、及PK
都是使用中文，如此我可以轉到InterBase6 or FireBird 1.5嗎?

[Ruey]

原則上可以
但你要試看看

建議你不要用中文建立表