Unidac vs dbExpress - some new questions

[pcbb]

Hello,

First congratulations to team devart, the components are great.

I had the MyDAC license and two days I bought 2 days ago the dbExpress for sqlite

I found several topics of comparisons, but I'm still not satisfied with all the answers. I would only compare Unidac vs dbExpress (ignoring MyDAC direct connection components, etc.)

1) Which has more features?

2) What is the fastest? (performance)

3) If Unidac is faster, why the dbExpress price is higher?

4) In my case I need sqlite with better performance, what would be the best choice?


Thanks!


Best regards,
Paulo.

[AlexP]

hello,

1) Since the dbExpress technology itself has its internal limitations, we cannot implement all featureas, supported in DAC products, in similar dbExpress drivers, threfore DAC products are more functional.
2) UniDAC wins dbExpress drivers by performance due to the fact that when developing applications with dbExpress, you have to use Client\DataSet, that leads to full caching of data in the client and as a result decreases performance (this is a specificity of dbExpress driver work). UniDAC allows to work with data more flexibly (for example, to retrieve data in portions on request), that significantly increases application performance
3) For comparison of the UniDAC and dbExpress prices, you should take UniDAC Professional Edition, as Standard Edition is designed for those, who already have other DAC products, and doesn't include any providers for work with DBs.
4) We are releasing a new product this week - LiteDAC for work with SQLite Data Base. It won't differ from UniDAC by performance, and will include the new server-specific features, therefore, for the time being, when choosing a product for work with SQLite, the optimum choice will be LiteDAC.

[pcbb]

AlexP

A upgrade of dbExpress to DACLite is possible? (Has 2 days that I bouth ... I don't used...)

The sales support is too slow to answer =/

best regards,
Paulo.

[pcbb]

I am already a client MyDAC, very pleased.

I sent a new e-mail, I ask you to ignore before it about my dbExpress sqlite license.

Best regards,
Paulo.