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Table Info of a mdb database!!!

Posted on 2000-03-07
5
221 Views
Last Modified: 2013-11-20
Hi,

I have used the following code to get table info from my database.
My database contains only one table.
I don't know why the index value must be set to 4 in order to get the name of the table.

Can anyone tell me what is the use of the value index?
If my database contain only one table, why I can't get the name of the table by setting the value of index equal to 0.

--------------------------------------------------------------------------
CDaoTableDefInfo TableInfo;
int index=0;
BOOL lp= TRUE;
while (lp)
{
m_pDBList->GetTableDefInfo(index,TableInfo,AFX_DAO_ALL_INFO);
if (!(TableInfo.m_lAttributes & dbSystemObject)&& !(TableInfo.m_lAttributes & dbHiddenObject))
{
break;
}
  index++;
}

--------------------------------------------------------------------------


Thanks!!!
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Comment
Question by:ee_lcpaa
  • 2
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5 Comments
 
LVL 4

Expert Comment

by:inpras
ID: 2594702
Hi

Index is just a look up number of the perticular tabledef collection in the database it doesn't have to do any thing with the number of tables present in the database.
0
 
LVL 3

Expert Comment

by:SamHobbs
ID: 2594975
inpras is probably correct.

There are also hidden and system tables, correct? I am only guessing, but perhaps they use index values that are less than 4.
0
 
LVL 3

Expert Comment

by:SamHobbs
ID: 2594980
I forgot to mention something. Did you try doing something like setting a breakpoint on the if statement after the GetTableDefInfo call to see what the results were for indexes 0 to 4?
0
 
LVL 3

Expert Comment

by:V_Bapat
ID: 2594990
I am not sure about this but...
It may be so that 5 tables were created and the first 4 were deleted.

Can you try creating this table and then get the table info?
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LVL 3

Accepted Solution

by:
V_Bapat earned 40 total points
ID: 2595073
These are the first 4 system tables:

Index   Table name
 0        MSysACEs
 1        MySysObjects
 2        MySysQueries
 3        MySysRelationships

That is why your table index is 4.

If you want to get only the user tables, you can try something like this:

CDaoTableDefInfo tdiTableInfo;
long lTableCount = m_pDBList->GetTableDefCount();

for(int i = 0; i < lTableCount; i++)
{
   m_pDBList->GetTableDefInfo(i, tdiTableInfo, AFX_DAO_ALL_INFO);

   if(tdiTableInfo.m_lAttributes & dbSystemObject | tdiTableInfo.m_lAttributes & dbHiddenObject)
      continue;

// tdiTableInfo.m_strName contains the table name.
// Display it.
   AfxMessageBox(tdiTableInfo.m_strName);
}

Vicky
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