Re: changing keys of a physical file

[Vern Hamberg <vhamberg@xxxxxxxxxxxxxxxxxxxxxxxxx>]

Paul

Yup, here's a little of the output from one of ours:

 Files Dependent On Specified File
   Dependent File         Library       Dependency   JREF    Constraint
       IDX01              VERN          Data
       IDX02              VERN          Data

DSPFD VERN/IDX01 gives:

File Description Header
  File  . . . . . . . . . . . . . . . . . . . : FILE       IDX01
  Library . . . . . . . . . . . . . . . . . . :            VERN
  Type of file  . . . . . . . . . . . . . . . :            Logical
  File type . . . . . . . . . . . . . . . . . : FILETYPE   *DATA
  Auxiliary storage pool ID . . . . . . . . . :            01
Data Base File Attributes
  Externally described file . . . . . . . . . :            Yes
  SQL file type . . . . . . . . . . . . . . . :            INDEX

I believe these are even usable in RPG for keyed access - VIEWs are not, as 
they are only encapsulated SQL SELECT statements and have no data, no true 
path to the data until the SQL statement is run.

BTW, I agree with your concern about documentation of changes - that's why 
some kind of tool like ERWin or Popkin may be helpful, as they reverse 
engineer your tables and indexes and generate scripts for maintenance. And 
OpsNave has facilities for generating the CREATE statement for tables and 
views and indexes.

Then you may need to implement auditing, so that changes to a file can be 
noticed.

Oy!
Vern

At 11:41 AM 12/22/2003 -0500, you wrote:
> Vern--
>
> If I add an index via SQL, does it properly show up under DSPDBR? And does 
> it exist as a true Logical File?
>
> --Paul E Musselman
> PaulMmn@xxxxxxxxxxxxxxxxxxxx