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Delphi Data Access Components

Delphi Data Access Components is a line of DB connectivity solutions for such databases as: Oracle, Microsoft SQL Server, MySQL, InterBase, Firebird, PostgreSQL, SQLite, Microsoft Access, DB2, Sybase Advantage Database Server, Sybase Adaptive Server Enterprise, and other databases (using ODBC provider).

http://www.devart.com/dac.html

Delphi Data Access Components

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  1. It would be helpful in the SQL Monitor to execute the query I'm seeing to see the result set my app receives.
    Sometimes I have to check something where the client is and I place the sql monitor to see, what SQL my app is sending and have to enter with a db explorer to check the sql with the parameters sent, what the result is. It would be cool, if the dbmon could have that built in, because the dbmon already has the sql and the params right there.

    This would often make my work much easier

    1 vote
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    0 comments  ·  Common  ·  Admin →
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  2. When I create a SqlMonitor but with Active := False the component or unit is sending a string to the monitor to say, that it has started, although it's inactive.
    Now imagine that with some 50 or 100 clients and you want to check the SQL of 1 certain workstation.

    Couldn't that be turned off ?

    1 vote
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    0 comments  ·  Common  ·  Admin →
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  3. Dev express have implemented a new server mode
    http://www.devexpress.com/Subscriptions/VCL/WhatsNewBuild12.1.3/index.xml?page=2#autolist1
    But it works only on ADO and DBexpress, perahaps you can work together to support unidac.

    201 votes
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  4. 13 votes
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    1 comment  ·  Common  ·  Admin →
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  5. Full Support TUniAlerter for events handling for MySQL Database.

    17 votes
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    0 comments  ·  MySQL  ·  Admin →
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  6. Шифрование входных и выходных параметров хранимых процедур.
    В IBDac есть возможность шифровать\расшифровывать на клиенте данные. Только с хранимыми процедурами это не работает.

    Encryption of input and output parameters of stored procedures. There is a capability in IBDAC to encrypt/decrypt data on the client. But it doesn't work with stored procedures.

    225 votes
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  7. TUniAlerter.OnEvent is always called in the main application thread regardless in what thread TUniAlerters is created or used.
    Devart advice is to use a synchronize, but that is not always possible or wanted. Why or you otherwise using threads?

    3 votes
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  8. Perhaps it's an idea to have an indicator on each specific post to show whether a topic has been answered?
    This could be as simple as a check box indicating the post has been answered - filled in by the original requester when the requester is happy with the response(s).
    Once the tick box is completed the post could be flagged with an icon - e.g. a green tick mark - and thus considered 'closed'.
    Would help responders to skip those posts already answered and those wishing to find answers to skip those posts that have not yet been answered.…

    1 vote
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    1 comment  ·  Common  ·  Admin →
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  9. The RefreshQuick method (https://www.devart.com/mydac/docs/devart.mydac.tcustommydataset.refreshquick(system.boolean).htm) seems very useful to refresh only the new records from big datasets. Ideally, make it possible to specify the name of the TIMESTAMP field so we don't have to create a duplicate - mine are called "created" for example). Maybe we don't even need the TimeStamp field for Postgresql ?

    1 vote
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    0 comments  ·  PostgreSQL  ·  Admin →
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  10. When using mySQL as the provider it is possible to add drop and create table statements to the "backuptofile"-file. This option is not possible when using the Microsoft SQL server provider. Could you please add this option ? :-)

    12 votes
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    1 comment  ·  Common  ·  Admin →
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  11. Scenario: 100K customer (master rows) with an average of 10 contact (detail) rows each... totaling about 1M detail rows.

    Without CachedUpdates I set LocalMasterDetail to false, and each time I scroll on the master dataset UniDAC fetches the 10 or so detail rows from the database. I can insert, modify and delete rows and all is saved immediately (on Delete or Post).

    With CachedUpdates I have to set LocalMasterDetail to true. This means UniDAC will fetch 1M detail rows and filter them out locally. With large networked databases this is really not feasible as it generates too much network traffic…

    3 votes
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    0 comments  ·  Common  ·  Admin →
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  12. ElevateDb is a powerful embedded and C/S database and should be supported by Unidac. It has been around for years and has many features found in PostgreSQL, like bi-drectional replication.

    13 votes
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    3 comments  ·  UniDAC  ·  Admin →
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  13. Implement COPY FROM/TO functionality for PostgreSQL (PgDAC component).

    PostgreSQL COPY manual:
    http://www.postgresql.org/docs/current/interactive/sql-copy.html

    103 votes
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    1 comment  ·  PostgreSQL  ·  Admin →
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  14. With direct mode support external library is no longer needed - this reduce deployment complexity. In addition local database file can be encrypted - this is very useful in secured environment.

    34 votes
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    started  ·  0 comments  ·  SQLite  ·  Admin →
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  15. When you have a query like

    select *
    from mytable
    where COALESCE(DVALIDFROM, :PeriodTo) <= :PeriodTo

    Then the params property of a TMSQuery component now contains the parameter 'PeriodTo' twice. This behaviour differs from the behaviour of TUniQuery. I think the behaviour of TMSQuery needs to be changed such that is has the behaviour of TUniQuery.

    2 votes
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    0 comments  ·  SQL Server  ·  Admin →
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  16. When TMSConnection.Authentication is auWindows the username is the currently logged in user, it woudl be good to have a way to connect as another user. There could be a new property TMSConnection.ImpersonateUser, if this is set and auWindows is set the connection will be done as if that user is logged in.

    2 votes
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    0 comments  ·  SQL Server  ·  Admin →
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  17. 1 vote
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  18. How to save TUniQuery to TVirtualQuery quickly ?

    1 vote
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    0 comments  ·  UniDAC  ·  Admin →
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  19. I would like to develop server program at LINUX(Lazarus) and client program at Windows(Delphi). I need to pack dataset on server site. I am using unidac with sql to access relational database. It is better to save returned dataset to memorystream quickly and transfer the stream to client. Also I want to restore memorystream to uniquery dataset quickly.

    1 vote
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    0 comments  ·  UniDAC  ·  Admin →
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  20. if you apply two different transaction in TIBCQuery.Transaction and TIBCQuery.UpdateTransaction property, then dbMonitor will show update/insert/delete statements in TIBCQuery.Transaction branch.

    Actually it should be shown in TIBCQuery.UpdateTransaction branch

    RUS
    Если вы применяете две различных транзакции в свойствах TBCQuery.Transaction и TIBCQuery.UpdateTransaction то dbMonitor показывает выражения update/insert/delete в ветке транзакции TBCQuery.Transaction.
    Однако хотелось бы видеть в ветке TIBCQuery.UpdateTransaction

    3 votes
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    0 comments  ·  Common  ·  Admin →
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