I am new with Visio. Is it possible to generate an empty database from a database scheme? I am trying to generate a SQLite database from a Visio database scheme. I have tried to use reverse engineering with different SQLite drivers but could never see any tables to select in the reverse engineer wizard......
BTW, Is there any other tools that could build a SQLite database easier? I tried SQLite Manager, SQLite2009 pro enterprise manager. Either of them seems to be very user friendly. Also tried OsenXP Suite which did not work at all either...
Hope this could help
there is an answer here
https://stackoverflow.com/a/3867566
seems you have to install ODBC driver
I've also tried using MySQL database, and need ODBC to connect to VISIO. The steps are here
http://sajjadhossain.com/2009/02/12/reverse-engineering-mysql-database-with-microsoft-visio/
Maybe the step is same because using ODBC
Unfortunately, I found error, if the table name is longer than 16 characters, then the visio will error.
Related
I have my windows 10 pc with ODBC datasource as my_odbc
This will connect to my remote informix server.
So for I am using this odbc for my local as well as php website development.
I want to use Adonis Js which uses knex.
How to give database connection properties, as to that of mysql, pg, mssql etc.
using odbc data source.
my connection is "DSN=my_odbc;UID=vijayan;PWD=vijayan;"
No.
But you can write your own ODBC client. There was some initial work done for it, but nowadays all new dialects should be added as separate npm modules like described in CONTRIBUTING.md https://github.com/tgriesser/knex/blob/master/CONTRIBUTING.md#i-would-like-to-add-support-for-new-dialect-to-knex-is-it-possible
(I'm not going to copy-paste that boilerplate code here, because it is more probable that knex changes and that linked document changes in compared to knex github getting offline)
Initial work that was done for the support is found here: https://github.com/tgriesser/knex/pull/2116
In which way can I access another database (not OpenEdge) via ODBC from OpenEdge without using DataDirect?
The use case is data migration from one system to another, so performance cannot be neglected completely but it's a one time thing that is allowed to take a little longer.
Why without DataDirect? Extra cost. Our client doesn't have the license.
Why not dump and load (via CSV f.e.)? The client doesn't want to do the mapping between the systems this way but with database views.
As far as I know there is no way to directly access other database if you're not using DataDirect or something like DataServer for Oracle etc.
However, you could call a third party ODBC library as external functions, and write your handle your queries to the foreign database by accessing. This wouldn't allow you to use OpenEdge constructs like FOR EACH, buffers etc, but it would allow you to retrieve the data and process it using custom functions, and then insert into the OpenEdge tables etc.
See the following KB for accessing external library functions:
https://knowledgebase.progress.com/articles/Article/P183546
Another approach you could use, assuming your tables are in OpenEdge already, is to use the OpenEdge SQL92 ODBC driver from another language (C/VB/Java/whatever works for you), and read the data from the source database and insert into OpenEdge via SQL92 ODBC.
Looking at the website there are downloadable ODBC drivers for most platforms:
https://www.progress.com/odbc/openedge
I'm trying to create a database using Scala and SQLite. I'm using Slick as the library for the SQLite.
I've been googling around for hours and still can't figure out how to get this working. I have eclipse project with Slick installed. I'm trying to instanciate the database with
val db = Database.forUrl("url",driver = "org.SQLite.Driver")
I have no idea what to put in the url. I'm not very sure about the driver part either. Should I use that one or does "scala.slick.driver.SQLiteDriver" work too? Or does it even matter?
I'm really confused about all this.Any help is appreciated
Thanks!
JDBC relies on drivers that implement the JDBC API, and provide access to the low-level functionality of working with particular databases.
URLs are how you tell a JDBC driver which database you want to connect to. The first part of the URL is always jdbc:<driverId>:, where driverId is the specific name that the driver expects to see (e.g. postgresql, mysql or, in your case sqlite.) The format of the URL after the driver ID is specific to the particular driver implementation. With mysql and postgres, where you typically connect over TCP to the database server, you'll see a format like this:
jdbc:mysql://dbserver:dbport/databaseName
jdbc:postgresql://dbserver:dbport/databaseName
But, since SQLite is an in-process, local database, the part of the URL after the driver ID is just a filesystem path, like so:
jdbc:sqlite:/home/me/my-db-file.sqlite
I have been developing locally for some time and am now pushing everything to production. Of course I was also adding data to the development server without thinking that I hadn't reconfigured it to be Postgres.
Now I have a SQLite DB who's information I need to be on a remote VPS on a Postgres DB there.
I have tried dumping to a .sql file but am getting a lot of syntax complaints from Postgres. What's the best way to do this?
For pretty much any conversion between two databases the options are:
Do a schema-only dump from the source database. Hand-convert it and load it into the target database. Then do a data only dump from the source DB in the most compatible form of SQL dump it offers. Try loading that into the target DB. When you hit problems, script transformations to the dump using sed/awk/perl/whatever and try again. Repeat until it loads and the results match.
Like (1), hand-convert the schema. Then write a script in your preferred language that connects to both databases, SELECTs from one, and INSERTs into the other, possibly with some transformations of data types and representations.
Use an ETL tool like Talend or Pentaho to connect to both databases and convert between them. ETL tools are like a "somebody else already wrote it" version of (2), but they can take some learning.
Hope that you can find a pre-written conversion too. Heroku one called sequel that will work for SQLite -> PostgreSQL; is it available without Heroku and able to function without all the other Heroku infrastructure and code?
After any of those, some post-transfer steps like using setval() to initialize sequences is typically required.
Heroku's database conversion tool is called sequel. Here are the ruby gems you need:
gem install sequel
gem install sqlite3
gem install pg
Then this worked for me for a sqlite database file named 'tweets.db' in the current working directory:
sequel -C sqlite://tweets.db postgres://pgusername:pgpassword#localhost/pgdatabasename
PostgreSQL supports "foreign data wrappers", which allow you to directly access any data source through the DB, including sqlite. Even up to automatically importing the schema. You can then use create table localtbl as (select * from remotetbl) to get your data into the actual PG storage.
https://wiki.postgresql.org/wiki/Foreign_data_wrappers
https://github.com/pgspider/sqlite_fdw
I need to export the data of a SQLite database and import this data to another SQLite database. But the two databases have different schemas.
Does exist an open source tool that can help me doing that job?
The only opensource tool that i know is opendbcopy that i'm using for migrate from a database server to another and also for a similar kind of job that you want to do with SQLite but i've done it with PostgreSQL.
However opendbcopy is JDBC compliant and can connect to every database that have a JDBC driver, so you can try, also if the schema is not the same you can use the column mapping feature :
In addition i know also a good commercial alternative (that is easier to use) that is ESF Database Migration Toolkit .