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<td width="68%" background="DDl_back2.jpg" height="44"><big><big><font face="黑体"><p align="center">         Delphi编程                            (BM: strayli FlyingBoy)          </font></big></big></td></tr>
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<hr><p align="left"><small>发信人: Zeemon (塞下秋), 信区: Visual <br>

标  题: Delphi3(9) <br>

发信站: BBS 水木清华站 (Tue Nov 11 20:04:50 1997) <br>

  <br>

下文由idol (沉默的人)在浙大BBS西子浣纱城站发表 <br>

  <br>

Access Driver <br>

------------- <br>

Some functionality is not yet implemented in this release. BCD <br>

(binary coded decimal) support is not available. Key-violation <br>

tables cannot be created with DbiAddIndex. (All other DbiAddIndex <br>

functionality is supported.) QBE, heterogeneous queries, and <br>

queries using the local SQL engine are not supported. In the <br>

SDK, DbiDoRestructure and DbiRegenIndex are not available. <br>

  <br>

The Access driver does not support DAO 3.5 (Access 97). If you <br>

upgrade Access 95 to Access 97, DAO 3.0 still resides on your <br>

machine, so the driver will function correctly. If you install <br>

Access 97 with no prior version of Access 95, the driver will <br>

not function. <br>

  <br>

Because DAO 3.0 (Access 95) is not thread-safe, all database <br>

functions must occur in the application's primary thread. <br>



  <br>

MS Access does not support opening a table that has <br>

already been opened exclusively. Hence opening a table <br>

when TTable.Exclusive is set to True prevents the user <br>

from opening that table again, even in same session. <br>

  <br>

Use a BLOB as a parameter in a query only if the BLOB data is <br>

less than 256 bytes. <br>

  <br>

When the Database Desktop copies an InterBase table to Access, <br>

the table and data are copied without indexes. If the table <br>

includes an index, you'll see an "invalid parameter" error. <br>

  <br>

When borrowing a structure from a Paradox table, the Database <br>

Desktop does not copy primary indexes to the resultant Access <br>

table. <br>

  <br>

Internet <br>

-------- <br>

In order for the BDE to access paradox or dBASE tables <br>

from a Web server application, the Web server must have <br>

appropriate access privileges for the disk drive where <br>

>

appropriate access privileges for the disk drive where <br>

the table resides. Access privileges may depend on your <br>

Web server and how it is configured. See your Web <br>

server's documentation for details. <br>

  <br>

  <br>

-- <br>

※ 来源:·BBS 水木清华站 bbs.net.tsinghua.edu.cn·[FROM: 162.105.118.41] <br>

</small><hr>
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