minor documentation updates to reflect changes in driver status

git-svn-id: http://svn.php.net/repository/pear/packages/DBA/trunk@106247 c90b9560-bf6c-de11-be94-00142212c4b1

docs/README.txt

@@ -4,7 +4,7 @@ functions in PHP (e.g. gdbm does not support dba_replace), has its own
 file-based dbm driver for installations where dba support is not included
 in PHP.
 
-** Using DBA **
+** About DBA **
 
 Berkeley DB style databases are much simpler than the other database 
 systems that PHP supports. They typically support inserting, removing, 
@@ -17,10 +17,9 @@ database system keeps track of data by key-value pairs rather than by
 location-offset.
 
 DBA implements all of the basic functionality of a Berkeley database and 
-adds extra functionality. More complex data models can be created using 
-DBA_Table and DBA_Relational, which provide the ability to perform 
-database operations such as selects, joins, sorts and projects on rows 
-and fields, much like a stand-alone RDBMS. 
+adds some extra functionality.
+
+** Usage **
 
 DBA objects are generated by calling the static method of class DBA, 
 create().
@@ -35,11 +34,9 @@ http://www.php.net/manual/en/ref.dba.php. If the driver string is set to
 'file' or the dba_ functions are not present, then a built-in driver 
 is used.
 
-NOTE: The gdbm and db3 drivers appear to work perfectly with DBA. 
-Currently (as of PHP 4.3cvs), db2 causes a segmentation fault when 
-opening a database, and cdb is not very useful due to the fact that it 
-does not support write operations. dbm and ndbm have not been tested 
-with DBA.
+NOTE: The file, gdbm, db2, db3 and db4 drivers work perfectly with DBA. Other
+drivers may work (see http://www.php.net/manual/en/ref.dba.php) but have
+not been tested yet.
 
 Once the object is created, a database file can be opened.