I have a application written long time back using the MS Access as the configuration database. It was using OLEDB Provider (Jet Engine) for retrieving data from the configuration DB.
I intended to replace MS Access Db lightweight RDBMS which requires no additional installation requirements. Thinking of using SQLLite which seems to suite my needs. Wanted to check if anyone have invovled in migrating the data from MSAccess to SQL Lite. Is there an easy way to migrate the schema and data?
You can quite much transfer data and schema if you setup the ODBC driver for sqlite.
Once done then you can run append queries in Access to export to the sqlite database.
Of course with sqlite you don't get or have forms, reports or a coding language. So, you have to replace that part of Access with some other kind of development platform.
So, you need to get a ODBC driver for sqlite.
This one works well:
http://www.ch-werner.de/sqliteodbc/
So, once you done the above, then you can link from access to sql lite. You can even edit data with Access forms, or even run access reports against data in sqlite.
Related
Can I know please the difference between SQL Server and SQLITE .Is there any major differnces in the syntex? I know SQL but I did not learn SQLITE which I have to know within days ???
SQLite supports pretty much full SQL syntax, in fact it probably has less quirks than MS SQL Server
The huge difference is that one is a server (SQL server). The other is embedded (SQLite), a totally different use case
Write a hello world program using SQLIte, create a table and store a row.
There are some very good free sqlite tools for inspecting a sqlite DB so you can see if your test worked
SQL is the query language to manage databases.
SQL Server is DBMS product of Microsoft.
SQLite is a open-source DBMS often used in PoC (proof of concept, or prototypes) applications or mobile apps. Its "advantage" is that the whole database is stored in a single file in your file system. You don't have to setup a whole database server to work with sqlite. This is obviously not a solution to real life applications or web sites.
Hi I have source SQL DB and destination RDS PostgreSQL DB.
I want to migrate by using flyway. First is it possible ?
If possible then can anybody help me with solutions?
Flyway is a tool for running scripts, rollbacks, targeted piecemeal deployments, all sorts of other stuff. However, it doesn't generate scripts. You have to provide it with syntax appropriate to the database system you're deploying to. T-SQL isn't the same as PostgreSQL. Nothing in Flyway will allow you to translate the T-SQL. You will have to do that work on your own. Once completed though, Flyway will absolutely be able to deploy those changes to your new database.
I have 2 questions for which I need help.
1)
I have developed an application where in I store the files(doc,xls,etc) in database. I have used LINQ to perform insert,update and delete. I have used MS SQL. Now, the requirement is that of using MySql. Can I use LINQ wit MySql. I searchd and found that LINQ only supports MS SQL and access. If it is decided that MySql should be usued, I dont want to go back to the traditional 3tier architecture. Can NHibernate can be used with MySql?
2)
How do the blade servers perform when it has to manage a data of 500gb+ data(documents). The RAM is about 12GB. Please nedd sugggestions that if such a huge amount of data is there, is it better not to store the data(documents) in database and store it in drives on the server instead.Because I have seen that if the data is stored in database(binary format) the size does increase.
Ok, here we go
1) It is not possible to communicate with an MySQL-Database via Linq To Sql, like you mentioned it is only build for MSSQL and Access. Prefer using the EntityFramework to communicate with variable databases. It is nearly the same to work with like Linq To Sql. You can easily develop your application using an MSSQL-Database and switch to a MySQL-Database after deployment by just changing your ConnectionString and installing the MySQL-EntityFramework-Connector.
These links may be helpfull to you:
Codeproject.com - An Introduction to Entity Framework for Absolute Beginners
Stackoverflow.com - Using MySQL with Entity Framework
2) I would advise you to store your data on physical drives and set references to the stored file in your database. This is because the heavy amount of data transferred while requesting one of your documents will slow down your database for other querys that normally just would take milliseconds to be executed.
I'm building a small ASP.NET MVC site where I want to use SQLite. While I already know how I will be connecting to the database (using DbLinq), I don't understand how to put the ASP.NET tables generated by aspnet_regsql.exe into an SQLite database.
I've used the regsql tool before with SQL Server, but never with SQLite. How do I create them for the SQLite DB?
One strategy that I think might somehow work is:
Use aspnet_regsql.exe to create the tables into an empty SQL Server database
Script all the objects in the database into T-SQL
Apply the T-SQL to the SQLite DB (how?)
Take a look at http://salient.codeplex.com
the Web.SQLite directory contains a drop in replacement for the default SQL providers.
It was a proof of concept that turned out ok. It uses EF, so is not as performant as it could be but should service low/medium traffic sites without issue.
You should be able to exclude all other files except that subdirectory and build it in isolation if desired. This will allow you to also trim the references.
Let me know if you have any issues.
You could try it with SQL Server Compact Edition 4 which is an embeddable SQL engine like SQLite but has an easier upgrade path if you need to grow it up to SQL Express or SQL Server.
Unfortunately the aspnet_regsql will not work with SQLite, so your strategy is essentially the correct approach. However, I would suggest looking at something like Roger Martin's Gallery Server Pro, which uses SQLite and already has the Membership, Role, and Profile provider tables scripted. You can make use of the script. See Roger's Code Project article from more information.
I need to extract Quickbooks SQL structure to make a Diagram about the tables that I need to work with. Could this be possible ?
I think QODC could solve my connection issue but I don't know how to extract SQL dump from it.
Thanks in advance
You can't directly access the QuickBooks SQL structure, so you're out of luck. Most versions of QuickBooks are not even based on an SQL backend (only Enterprise edition is), so it's not even applicable to those versions.
QuickBooks provides an XML-based API to adding/modifying/querying/deleting data within it, but does not provide direct SQL access. QODBC is a wrapper around the XML-based API which simply transforms XML requests into SQL requests, and vice versa. It is not reverse-engineering anything, it's simply transforming data from one format/protocol, into another.
You choices are to either use the XML API as is, use QODBC, or use the XML API and do something similar to what QODBC is doing by transforming the XML into an SQL-friendly format. I've done something similar with my PHP code, schema and code linked below:
MySQL Schema
QuickBooks PHP Framework
You can install QODBC, then setup a linked table in Sql Server Mgmt Studio.
From there, you can more or less query the tables out of QuickBooks into tables in a SQL Svr database.
With QuickBooks Enterprise 2011 this changed, and you can have real ODBC access (although with limited rights and to a limited amount of tables) and then use an SQL tool to map via the ODBC access.
QODBC publishes data layouts for all of the tables it exposes here. The format is really nice if you want to correlate a field on the QuickBooks screen to a table, which is usually what you need in a QuickBooks integration design process.