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lazdatadesktop: what changed

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Title: lazdatadesktop

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1+## Purpose
2+
3+Lazdatadesktop is a database tool that can be used with Lazarus or standalone. It lets you manage data dictionaries, browse them etc.
4+
5+![](/wiki-images/c/c7/Lazdatadesktop.png)
6+
7+## Documentation
8+
9+No official documentation; see [here](http://www.freepascal.org/~michael/articles/lazdbdesktop/lazdbdesktop.pdf) for an article describing its use.
10+
11+## Getting it
12+
13+Lazdatadesktop is a Lazarus project in the \<lazarusdir\>\tools\lazdatadesktop directory. Simply compile it like you would any other Lazarus project.
14+
15+You can add it to the Lazarus tools menu if you want to.
16+
17+## Multi-language support
18+
19+The LazDataDesktop application has been translated into several languages. By default, it starts in the user's local language. If you want to run it in a different language use the command-line argument `-language lc` or `--language=lc` where "lc" is the language code abbreviation of the requested language, e. g. "ru" for Russian: `-language ru`.
20+
21+## Extending LazDataDesktop
22+
23+You can add additional database drivers to Lazdatadesktop. We're assuming you're adding support for sqldb database drivers. You will need to perform additional work if adding e.g. ZEOS drivers.
24+
25+### Basic support
26+
27+Basic support can be added by first adding support to FreePascal data dictionary code in \<fpcsource\>\packages\fcl-db\src\datadict:
28+
29+- creating a basic data dictionary unit. You could try copying and modifying another basic unit such as fpddmysql40.pp
30+- edit buildd.lpr to add the unit you created above.
31+- edit Makefile.fpc to add the unit to the packages_\<OS\>=* lines in the \[required\] section, and the \[target\] section.
32+
33+Recompile FPC to get support into Lazarus.
34+
35+Then add support to the data dictionary:
36+
37+- adding the data dictionary unit (e.g. fpddmysql51) to the implementation uses clause of frmmain.pp
38+
39+Recompile lazdatadesktop
40+
41+### Full support
42+
43+For full support, you will need to edit the fpdd\<database\>.pp unit.
44+
45+An alternative approach would be to rewrite the fpddd* units to use database schema data from the underlying drivers (e.g. the sqldb drivers).
46+
47+---
48+*From the Free Pascal wiki, page "lazdatadesktop", as it stood on 2023-07-24 after a change by Wp, out of the wiki's dump of 2024-05-26. Copyright stays with the author who wrote it, according to the old wiki's [[Licensing]] page. If you have concerns about this material, [message the admin](/wiki-contact).*
49+Category: Databases
50+Category: Lazarus
51+Category: Tools

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