WDOptimizer: Overview

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WDOptimizer

WDOptimizer: Overview

Overview

Use

Reminder: Index of a file

See also

WDOptimizer: Overview

Available only with this kind of connection

Overview

WDOptimizer

The different operations that can be performed by WDOptimizer are as follows:

Optimizing the indexes
This option allows you to perform several types of operations:
1. Check the indexes: Checks the consistency between the index and the data files.
2. Optimize speed of indexes (Re-calculate statistics): Optimizes the indexes by calculating statistics on the indexes. These statistics are used to optimize the filters, the queries and the HFSQL views.
  Remark: The more the data file is modified, the less the statistics reflect the content of HFSQL data file. The more records the data file contains, the less the modification of a single record impacts the overall statistics.
3. Rebuild the indexes: Optimizes the access to the records of the data file and re-calculates the statistics. All the crossed records are automatically deleted.
4. Rebuild the indexes and the memos: Optimizes the entire data file, its index and its memos.
5. Check and compress the indexes and the memos: Optimizes the entire data file, its index and its memos. The memos will be compressed. Advanced options are available ("Options for compressing the memos").
View the properties of a file
Displays the characteristics of a data file (name, extension, format, encryption, ...).
Edit and modify a ".REP" file
Optimizes the access to the data files.
Cancel a transaction or free the records in transaction
Cancels a transaction without interrupting the execution of the program.

Remark: From version 19, HFSQL is the new name of HyperFileSQL.

Use

Starting WDOptimizer

WDOptimizer can be started in interactive mode via one of the following methods:

0
Run "WDOptimizer.EXE" directly.

The different operations that can be performed by WDOptimizer are as follows:

Optimize indexes. For more details, see Optimizing the indexes.
Viewing the properties of a file. This data file can be selected in the list displayed on the screen or it can selected via the file picker.
Editing a .REP file: Just select the desired .REP file. For more details, see Editing and modifying a ".REP" file
Handling the transactions. For more details, see Canceling a transaction or freeing the records in transaction

Remark: On the development computer, WDOptimizer can be started from WDTool directly.

WDOptimizer can also be run in command line. For more details, see Starting WDOptimizer in command line.

Use conditions

WDOptimizer can be freely distributed. WDOptimizer can be installed with the applications developed with WINDEV or WEBDEV. The license agreement of WINDEV or WEBDEV is fully enforced.

When creating the setup procedure, WDOptimizer is automatically supplied with your applications.

Reminder: The setup procedure can be created:

from the wizard: on the "Project" pane, in the "Generation" group, click "Setup procedure".
from the setup editor: on the "Tools" pane, in the "Utilities" group, click "WDInst".

Necessary files

The following files are required to install WDOptimizer:


WDOptimizer.exe	wdxxxetat.dll
wdxxxhf.dll	wdxxxhtml.dll
wdxxxmat.dll	wdxxxobj.dll
wdxxxpnt.dll	wdxxxprn.dll
wdxxxsql.dll	wdxxxstd.dll
wdxxxvm.dll	wdxxxxml.dll
wdxxxcom.dll	wdxxxxtrs.dll
WDOutil.WDK	WDOptimiseur.CHM
WDOptimiseurUS.CHM

To uninstall WDOptimizer from a computer, all you have to do is erase its directory.

Reminder: Index of a file

The index of a data file is a specific file (.NDX). This file is created according to the browse keys defined on the data file. It allows you to quickly find data in a data file.

For a better performance of the searches performed in your data files, the index should be optimized on a regular basis.