I have a large (100+ tables) SQL Server 2005 database that I would like to start mapping with Doctrine. Right now I've done a manual job of a few tables (no relations yet, just disparate tables), using PHPDOC annotation mapping inside my entities. Manually it works like a charm ... however it really will take ages to get everything mapped out and I'm looking for an easier way.
I looked into ORM Designer, but it doesn't seem to offer imports from a SQL Server database. I also looked at using Doctrine CLI and doing the "reverse engineering" mentioned here. Finally tried using orm:convert-mapping --from-database with no luck. It appears the last two are conditional on the fact that the sqlsrv drivers (running on IIS7 here) cause an error on my tables when they have no index: PDOException: The active result for the query contains no fields.
Is it possible that I can load up Doctrine on an Ubuntu machine, and use whatever drivers Linux has to connect to SQL Server 2005 ... then perhaps the orm:convert-mapping feature wouldn't die on me?
Any help would be much appreciated!
Try with this drivers for php. (clue: non thread safe)
Also check your connection parameters.
I worked on a SQLServer 2005 express project with Symfony2 and I mapped all my tables in reverse with no trouble at all.
Well, actually had to implement a new doctrine type for datetime as it says here.
Good luck!
Related
It's been three days that I've been looking for a solution for this scenario I'm in: I need to access to a SQL Server 2000 hosted in a Windows Server 2000, from a PostgreSQL 9 x hosted on Debian 7. This is because me and my team will mount a web server and we need to extract some info from the database (the one in SQL Server 2000).
And no matter how many pages I have visited, I can't find a solution, it seems that there isn't much documentation about the topic. I've read some things like pgadmin, foreign data wrappers, dbi.links... But none of the documentation that I have seen exposes a viable solution since there is not a single and straightforward tutorial.
I just want to make a simple select or update query from PostgreSQL to SQL Server 2000. I really need help.
https://www.mssqltips.com/sqlservertip/3663/sql-server-and-postgresql-foreign-data-wrapper-configuration--part-3/
Get TDS Foreign data wrapper from here http://pgxn.org/dist/tds_fdw/
Also you need to open the ports
I have a scenario where I get queries on a webservice that need to be executed on a database.
The source for these queries is from a physical device so I cant really change the input to my queries.
I get the queries from the device in MSSQL. Earlier the backend was in SQL Server, so things were pretty straight forward. Queries would come in and get executed as is on the DB.
Now we have migrated to Postgres and we don't have to the option to modify the input data (SQL queries).
What I want to know is. Is there any library that will do this SQL Server/T-SQL translation for me so I can run the SQL Server queries through this and execute the resulting Postgres query on the database. I searched a lot but couldn't find much that would do this. (There are libraries that convert schema from one to another but what I need is to be able to translate SQL Server queries to Postgres on the fly)
I understand there are quite a bit of nuances that will be different between SQL and postgres so a translator will be needed in between. I am open to libraries in any language(that preferably runs on linux : ) ) or if you have any other suggestions on how to go about this would also be welcome.
Thanks!
If I were in your position I would have a look on upgrading your SQL Sever to 2019 ASAP (as of today, you can find on Twitter that the officially supported production ready version is available on request). Then have a look on the Polybase feature they (re)introduced in this version. In short words it allows you to connect your MSSQL instance to other data source (like Postgres) and query the data in as they would be "normal" SQL Server DB (via T-SQL) then in the background your queries will be transformed into the native pgsql and consumed from your real source.
There is not much resources on this product (as 2019 version) yet, but it seems to be one of the most powerful features coming with this release.
This is what BOL is saying about it (unfortunately, it mostly covers the old 2016 version).
There is an excellent, yet very short presentation by Bob Ward (
Principal Architect # Microsoft) he did during SQL Bits 2019 on this topic.
The only thing I can think of that might be worth trying is SQL::Translator. It's a set of Perl modules that have been around for ages but seem to be still maintained. Whether it does what you want will depend on how detailed those queries are.
The no-brainer solution is to keep a SQL Server Express in place and introduce Triggers that call out to the Postgres database.
If this is too heavy, you can look at creating a Tabular Data Stream (TDS is SQL Server network transport) gateway with limited functionality and map each possible incoming query with any parameters to a static Postgres query. This limits any testing to a finite, small, number of cases.
This way, there is no SQL Server, and you have more control than with the trigger option.
If your terminals have a limited dialect demand then this may be practical. Attempting a general translation is very likely to be worth more than the devices cost to replace (unless you have zillions already deployed).
There is an open implementation FreeTDS that you could use if you are happy with C or Java.
I'm planning to play around with Oracle Business Intelligence (for fun). I have access to a number of Oracle products, and may have gone overboard installing them all (quite possibly more than I need).
Problem is I'm not too sure how all the different Oracle components fit together, but I think I am still missing something, a crucial part - DBCA.
All the online help material I can find says use DBCA to create a database - but I don't seem to have DBCA anywhere.
What I do have installed is:
Oracle - OraClient11g_home1
Oracle - OraDb11g_home1
Oracle Business Intelligence
Oracle Weblogic
Does Oracle have a separate Database Server that is not included in the above? (Like MS SQL Server)
I'll note that I am completely new to Oracle and may be missing something very simple, so any help would be appreciated.
I'm looking for an answer that can lead me to how I can install DBCA and create my database but extra kudos for any additional brief information on how these Oracle building blocks work independently and together.
DBCA is the database configuration assistant. It is a wizard used to create a database and should be instaled during the server install. If you are testing you just want to create a database as part of the server insall and ignore dbca.
Oracle - OraDb11g_home1 is the database (most probably at least - given then Oracle naming conventions). DBCA was called as part of the installation process.
Note that a "database" in Oracle terms is something completely different than a "database" in MS SQL Server. A SQL Server "database" is closer to an Oracle schema.
Is there seriously no way of using a shared access non-server driven database file format without having to use an SQL Server? The Entity Framework is great, and it's not until I've completely finished designing my database model, getting SQL Server Compact Edition 4.0 to work with Visual Studio that I find out that it basically cannot be run off a network drive and be used by multiple users. I appreciate I should have done some research!
The only other way as far as I can tell is to have to set up an SQL server, something which I doubt I would be able to do. I'm searching for possible ways to use it with Access databases (which can be shared on a network drive) but this seems either difficult or impossible.
Would I have to go back to typed DataSets or even manually coding the SQL code?
Another alternative is to try using SQL
Install SQL Server express. Access is not supported by EF at all and my experience with file based databases (Access, SQL Server CE) is mostly:
If you need some very small mostly readonly data to persist in database you can use them (good for code tables but in the same time such data can be simply stored in XML).
If you expect some concurrent traffic and often writing into DB + larger data sets their performance and usability drops quickly. They are mostly useful for local storage for single user.
I'm not sure how this relates for example to SQLite. To generate database from model for SQLite you need special T4 template (using correct SQL syntax).
Have you tried SQLite? It has a SQL provider, and as far as I know EF supports any provider. Since it's file-based, that might be a plausible solution. It's also free.
I'm having trouble figuring out databases in VB.NET. (VS 2008)
What control(s) do I need to use and how do I use them? I am ,looking for tutorials and sample code too.
I'm working on a trivia game where the admin can remove and add questions to a database.
EDIT:
The program must be able to do all of the DB interactions itself through code.
Regarding DB portability...
I do not intend to install it on many machines, so portability is not a major issue, but I's rather not be bound to Access or SQL Server. (Is that possible? - A portable database file?)
A bit more complaining...
I really need help with connection strings and the whole DB gamut in VB. I've done DBs in PHP so I'm not completely ignorant. It's the VB side of things that's confusing.
Thanks.
Have you considered SQLite DB? It's a very small DB and is used my many vendors. I have not used SQLite personally, but I do know that Firefox uses it and so does iPhone (from what i've read).
SQLite does not require you to install anything (as per the post below). It's a nice alternative to Access or carrying around SQL Server Express.
If you do decide to use SQL Server Express, you will be required to install the run-time, from here for each machine it's used on.
Below are some links which may help you get started
Google for SQLite DB
ADO.NET 2.0 Provider for SQLite
And finally, here's a blog post outlining how to get it done, and quickly.
Cheers!
I would suggest Microsoft's Enterprise Library - The hands on labs available make it a breeze to setup access to a database, and can make it as simple as a config change to point to a new/different DB.
Also, check out http://connectionstrings.com/ for related info.