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</tr>

<tr valign="top">
<td>adLockUnspecified</td>
<td>-1</td>
<td>Unspecified type of lock. Clones inherits lock type from the original
  Recordset.</td>
</tr>

<tr valign="top">
<td>adLockReadOnly</td>
<td>1</td>
<td>Default. Read-only records</td>
</tr>

<tr valign="top">
<td>adLockPessimistic</td>
<td>2</td>
<td>Pessimistic locking, record by record. The
provider lock records immediately
after editing</td>
</tr>

<tr valign="top">
<td>adLockOptimistic</td>
<td>3</td>
<td>Optimistic locking, record by record. The
provider lock records only when calling update</td>
</tr>

<tr valign="top">
<td>adLockBatchOptimistic</td>
<td>4</td>
<td>Optimistic batch updates. Required for batch update mode</td>
</tr>
</table>
<br />
<hr />

<a name="CommandTypeEnum"><h3>CommandTypeEnum Values</h3></a>
<table class="ex" cellspacing="0" border="1" width="100%" cellpadding="3">
<tr valign="top" align="left">
<th width="30%">Constant</th>
<th width="10%">Value</th>
<th width="60%">Description</th>
</tr>

<tr valign="top">
<td>adCmdUnspecified</td>
<td>-1</td>
<td>Unspecified type of command</td>
</tr>

<tr valign="top">
<td>adCmdText</td>
<td>1</td>
<td>Evaluates CommandText as a textual definition of a command or stored procedure
  call</td>
</tr>

<tr valign="top">
<td>adCmdTable</td>
<td>2</td>
<td>Evaluates CommandText as a table name whose
columns are returned by an SQL query</td>
</tr>

<tr valign="top">
<td>adCmdStoredProc</td>
<td>4</td>
<td>Evaluates CommandText as a stored procedure name</td>
</tr>

<tr valign="top">
<td>adCmdUnknown</td>
<td>8</td>
<td>Default. Unknown type of command</td>
</tr>

<tr valign="top">
<td>adCmdFile</td>
<td>256</td>
<td>Evaluates CommandText as the file name of a
persistently stored Recordset.
Used with Recordset.Open or Requery only.</td>
</tr>

<tr valign="top">
<td>adCmdTableDirect</td>
<td>512</td>
<td>Evaluates CommandText as a table name whose
columns are all returned. Used with Recordset.Open or Requery only.
To use the Seek method, the Recordset must be opened with adCmdTableDirect. Cannot be combined with the ExecuteOptionEnum value adAsyncExecute.
</td>
</tr>
</table>
<br />
<hr />

<a name="ExecuteOptionEnum"><h3>ExecuteOptionEnum Values</h3></a>
<table class="ex" cellspacing="0" border="1" width="100%" cellpadding="3">
<tr valign="top" align="left">
<th width="30%">Constant</th>
<th width="10%">Value</th>
<th width="60%">Description</th>
</tr>

<tr valign="top">
<td>adOptionUnspecified</td>
<td>-1</td>
<td>Unspecified command</td>
</tr>

<tr valign="top">
<td>adAsyncExecute</td>
<td>16</td>
<td>The command should execute asynchronously. Cannot be combined with the CommandTypeEnum
value adCmdTableDirect
</td>
</tr>

<tr valign="top">
<td>adAsyncFetch</td>
<td>32</td>
<td>The remaining rows after the initial
quantity specified in the CacheSize property should be retrieved asynchronously</td>
</tr>

<tr valign="top">
<td>adAsyncFetchNonBlocking</td>
<td>64</td>
<td>The main thread never blocks while
retrieving. If the requested row has not been retrieved, the current
row automatically moves to the end of the file.
If you open a Recordset from a Stream containing a persistently stored Recordset,
adAsyncFetchNonBlocking will not have an effect; the operation will be synchronous and
blocking. adAsynchFetchNonBlocking has no effect
when the adCmdTableDirect option is used to open the Recordset</td>
</tr>

<tr valign="top">
<td>adExecuteNoRecords</td>
<td>128</td>
<td>The command text is a command or stored
procedure that does not return rows. If any rows are retrieved, they are discarded and not
returned.
adExecuteNoRecords can only be passed as an optional
parameter to the Command or Connection Execute method</td>
</tr>

<tr valign="top">
<td>adExecuteStream</td>
<td>256</td>
<td>The results of a command execution should
be returned as a stream.
adExecuteStream can only be passed as an optional parameter
to the Command Execute method
</td>
</tr>

<tr valign="top">
<td>adExecuteRecord</td>
<td>512</td>
<td>The CommandText is a command or
stored procedure that returns a single row which should be returned as
a Record object</td>
</tr>

</table>
<br />
<hr />
<a href="ado_ref_recordset.asp"><img class="navup" src="../images/up.gif" alt="Recordset Object Reference" border="0" /> Complete Recordset Object Reference</a>

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