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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).

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Delphi Data Access Components

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241 results found

  1. Implementing UpdateOptions - TIBCQuery

    Two users modify the same field in the table,
    Error want to show the second user to save data.

    -) Using a TClientDataser and TDatasetProvider, no problem, works well.

    -) TFDQuery component FireDAC the Embarcadero it has the property
    Property: UpdateOpcions
    UpdateMode:
    upWhereAll
    upWhereChanged
    upWhereKeyOnly

    Implementing this property in TIBCQuery
    solve my problem of concurrency.

    thanks

    132 votes
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    0 comments  ·  InterBase/Firebird  ·  Admin →
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  2. Improve data type mapping feature

    1. Allow set field type mapping / rules by CHARSET
      Ex: if db field charset is UTF8 set field as TWideStringField

    2. set field type mapping / rules by DOMAIN
      Ex: if db field domain is DM_BOOLEAN set field as TBooleanField

    3. [Optional] Separate TFieldMappings component that allow to define custom field mappings. TConnection/TQuery should have a property of this type.
      Useful when use multiple connections (for example in threads), to define mapping rules once and link all Connections to one common component.

    108 votes
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    0 comments  ·  InterBase/Firebird  ·  Admin →
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  3. TIBCQuery.OnScrollFinish

    Implement OnScrollFinish event that is fired at the end of the scrolling process.

    For example we need to adjust some elements of interface on record change, even perform an aditional sql query or other heavy calculations.

    For example, if user scroll fast over 20 records in a grid, relying on AfterScroll event imply a lot of unused work. So instead executing it 20 times, we may do this once after scroll process is finished.

    In fact, such kind of logic in *Dac already have it on Master/Detail "wait" magic, so it's not too much to change to have this kind…

    103 votes
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    2 comments  ·  InterBase/Firebird  ·  Admin →
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  4. TIBCTransaction.OnEnd

    Implement TIBCTransaction.OnEnd(Action: TTransactionAction)
    This event should fire at any transaction finish action: Commit/CommitRetaining/Rollback/RollbackRetaining.

    111 votes
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    0 comments  ·  InterBase/Firebird  ·  Admin →
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  5. Add savetoJSON to uniquery

    As JSON more popular。
    It's time to support JSON in uniquery.

    43 votes
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    2 comments  ·  UniDAC  ·  Admin →
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  6. Spatial datatypes

    Support for MySQL Spatial datatypes so that they could be read and written. Geometry is saved as CBLOB field, but not usable as is.

    7 votes
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    0 comments  ·  MySQL  ·  Admin →
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  7. "DEFAULT VALUE" constraint support in TUniLoader

    For now, if some of the data I need to load in db I'm not able to calculate all fiellds values, there's no way to indicate TUniLoader to let the DB Server apply the fields "DEFAULT VALUE" constraint if any.
    A good way could be to make TUniLoader able to see no value (nor Null) was given to a column (so, still in "Unassigned" state).

    4 votes
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    0 comments  ·  UniDAC  ·  Admin →
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  8. Adding 'Persistent Indexes' to the TVirtualTable

    Could you consider to add the 'Persistent Indexes' to the TVirtualTable ?

    In this case the table could be have a few indexes. Inserting/deleting records will modify all indexes. The searching data will use existing indexes without recreating them. Something like in DBF files with several *.ndx files. Before searching the presistent index will be chose by index name and searching will use this index.

    At this moment it is possible to use only one index by setting the VirtualTable.IndexFieldNames property. Changing this property recreates the index, and for large table (>3000) takes time.

    The 'Persistent Indexes' are used in…

    7 votes
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    0 comments  ·  Common  ·  Admin →
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  9. Fastreport support using lazarus

    Accessing firebird database from fastreport runtime designer
    using lazarus.

    20 votes
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    0 comments  ·  InterBase/Firebird  ·  Admin →
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  10. Supporto JSon as Firedac (Reflection, JsonDataset...)

    68 votes
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    2 comments  ·  UniDAC  ·  Admin →
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  11. dbMonitor - Allow the copy of the parameters value in the clipboard

    7 votes
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  12. CodeTyphon compatability.

    Would love to see the DevArt components have compatibility for CodeTyphon (FPC/Lazarus fork) as well as instructions for installing/compiling.

    12 votes
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    0 comments  ·  Common  ·  Admin →
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  13. Add support for the parameter "Enable Cleartext Authentication"

    Add support for the parameter "Enable Cleartext Authentication" in TUniConnection. e.g. for best work "The Cleartext Client-Side Authentication Plugin".

    12 votes
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    0 comments  ·  MySQL  ·  Admin →
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  14. Internal Calc fields

    Support for InternalCalc fields. This is really usefull feature. And is supported by FireDac and ClientDataset.

    5 votes
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    2 comments  ·  Common  ·  Admin →
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  15. InternalCalc fields support

    It would be very usefull to have support for fkInternalCalc field types.
    It is supported by FireDac and ClientDataset why not UniDAC ?

    8 votes
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    0 comments  ·  Admin →
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  16. TUniLoader with Firebird - automaically calulate maximal value for RowsPerBatch

    For Firebird the possible value for RowsPerBatch depends on the number of rows in the table because the maximal length of an SQL statement is 64KB.
    For RowsPerBatch=0, UniDac should calculate the maximal possible value itself.

    2 votes
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    0 comments  ·  UniDAC  ·  Admin →
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  17. Implement Connection.QueryValue()

    FIBPlus have a great and simple way to quickly ask databse about value or set of values, this method is called QueryValue. If I want to ask database for only one row, I do not want to create a dataset for it. It causes a big overhead.

    Instead I would like to ask for a value like this:

    MyValue := Connection.QueryValue('SELECT TOP 1 USERNAME FROM USERS WHERE SURNAME = :SURNAME', [Surname])

    5 votes
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    1 comment  ·  InterBase/Firebird  ·  Admin →
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  18. SSl keys in virtual memory

    It will be good to implement some feature to use ssl keys stored in virtual memory like memory stream or blob field instead of file on local storage. For example it may be useful to store ssl keys in local encrypted database.

    3 votes
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    1 comment  ·  MySQL  ·  Admin →
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  19. TUniMetaData data-types

    the TUniMetaData data-type field now returns different data for different databases - Example:
    currently for MySql it returns a string e.g. 'float'
    but for MS SQL server it returns a number: e.g. 5 (for float fields)

    so the recommended improvement is to add a new field to the result that returns a string representing the native database type.

    this feature is useful if you want to show a list of columns including data-types to the user - it can also be used to generate a create script, etc.

    6 votes
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    0 comments  ·  UniDAC  ·  Admin →
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  20. Double click on TLiteDump

    Trivial: SQLite: when user dblclicks TLiteDump it does not open string list editor like in TMyDump

    6 votes
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    0 comments  ·  SQLite  ·  Admin →
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