We are using Mosaic to load and read data from multiple sources like MySQL, SQL Server, Oracle in around 100 jobs using the reader node of Mosaic.
To configure this reader node to connect these databases, how to create a connection for each one of them? Are these connections globally available in Mosaic?
Mosaic Decisions supports a wide range of connectors.
You can create connections with different data assets by providing required connection details in the Publish tab under Manager Persona.
Publish allows you to create a connection with any available source system by providing necessary detail like IP, Port, username, password, and other such required details to register/publish the metadata from the source system.
Here connections are of two types:
Public: This connection will be available to all. No lock symbol specifies that it is a public connection.
Private: This will not be available to all users. To use this connection you must provide your username and password. If the details are correct, only then the connection can be used. A lock symbol specifies that it is a private connection.
Once the connection is created, its datasets can be published and the same can be used for further processing in Flows.
EDIT
When you click on the Publish tab in Manager persona, you will see a list of available connectors. Refer screenshot below:
Related
First and Foremost, I know zip, zilch, nada, about VBA, access, and Advantage database Server.
I have a PC in one location that can connect and update with an Access 2010 file where every drive is mapped, e.g. \file\whatever
The advantage streamlinesql odbc dsn's were setup as such \file\whatever foxpro
Now, the PC has been moved to a new location (the company moved) and there is a vpn connection between the two locations (the data server is still located in the old location and cannot be moved), and so the new map would look like this: \xxx.xxx.xxx.xxx\file\whatever
However, Access cannot connect so that it can run its process and update the files it needs to.
I do not know the actual code to place here to help with fixing this, so answering this question with more is fine with me.
I can say that the vpn is built with sonic wall.
The first thing I would try is to connect with ARC32 (The ADS query tool), since you can then rule out ODBC and Access as the problem.
ADS has three connection types:
local
remote
internet
When you directly connect to an Advantage Database Server via TCP/IP, you want the remote connection type.
The connection type can usually be set via the ads.ini file, which also must contain the IP address and port for the ADS server:
[SETTINGS]
ADS_SERVER_TYPE=2
[MYDATABASE]
LAN_IP=10.20.1.20
LAN_PORT=6262
For more info about ADS.ini see the official documentation:
http://devzone.advantagedatabase.com/dz/webhelp/Advantage12/master_ads_ini_file_support.htm
When you try connection over ODBC maybe a complete reference of the connection options would be useful, I have written them down here:
https://stackoverflow.com/a/33544131/426242
I am new to the 'cloud' concept I have a Java based application for data entry which runs well on my LAN.
On my LAN I install:
MySql
Configure Instance ( user name - root, pass - ******)
Dump dummy database entry_db that is in raw format
Then I have a jar executable file which when runs, displays a login screen.
I manage to successfully log in using predefined ID and PASSWORD (user - config pass - ******)
After logging in I configure(d):
Database Type
Database IP
User Name (Root)
Password ****
Database Name ( It auto selects database named entry_db)
In another window I configure(d) Network File Sharing Location:
file shared location
image path
back up data path
config file location in xml
(Note - When I select file shared location, all other files take the same path automatically)
Then I create Admin account rather than Supervisor account or operator account and login with the Admin account and I can now upload data and distribute to all operators.
Here is my problem:
I configure a cloud computer on Hp Cloud (they provide me a static ip) and then import database from xeround.com.
I now have a dns and port number and also a log in form using MY PHP CLIENT
How can I package all this to the same executable jar file to be used from anywhere?
How can I use it just like on my LAN from the web?
What is the optimal configuration for this?
I work in Xeround.
I have read your question and I wanted to point out a couple of things; you should use the DNS in the connection string where you used to put hostname/IP of the MYSQL server machine and the port number where you used to put the MySQL default port (3306).
Other than that you can connect from anywhere there is access to the instance. I suggest that if your jar runs in the HP cloud you create your Xeround database instance there as well (this will yield improved performance).
If you still need help, we will be more than happy to help you. Just send us a quick email to support#xeround.com and we'll take it from there.
Cheers,
Yuval
I have an access database that sits on server x iis is running on server y. One of my web pages access data from the access database. If someone has the access database open say a end user on our network the web pages fail with a ...already opened exclusively by another user error message.
I created a local access database and used linked tables in order to access the tables that way. Even still I get the already opened exclusively by another user error. If I go through windows explorer and browse out to server x and open the database I can without issue. So my question is how can I simulate the same type of connectivity to the database without the error being thrown is it a matter of permissions to the access database or something within my connectionstring that would allow me to access the database.
Since it throws the error during my connection.open command I am figuring it is either permission related or something additional I need to add to my connection string. I have granted full control for the IIS AppPool\ on the local directory in which my local instance of the access database resides in but didn't seem to make a difference.
My connection string looks like:
Private Shared connSheriff As New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=\\serverx\directory\Access\MyDatabase.mdb;Jet OLEDB:Database Password=property;")
There are some options within the mdb that change how the database is opened by default, these should be your first port of call particularly setting the "default open mode" to "shared".
You've already split the database (data tables in the shared back-end, linked tables and the rest in the front-end). Make sure that each user uses a separate copy of the front-end mdb, otherwise you'll get locking issues on this.
There is a command line switch (/excl) that sets exclusive mode, but you just omit this to open the db shared so I doubt this is a problem.
You probably already know this but the "Shared" modifier has nothing to do with sharing between applications or users, but shares the connection variable between instances of your class (the c# equivalent is "static")
I'm trying to connect to an Access database file using a System.Data.OleDb.OleDbConnection. I need to connect in readonly mode because another application uses it at the same time. I can connect to the database in read/write no problem but can't seem to find anywhere the correct string for readonly.
I've tried:
Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Persist Security Info=False;Mode=Read
Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Persist Security Info=False;Extended Properties="ReadOnly=true;"
Thanks.
EDIT:
(I should have put more information in the original question.)
I could connect successfully to the access database when it was on the local machine, but when I tried connecting to the access database on a remote machine with the connection string
Provider=Microsoft.ACE.OLEDB.12.0;Data Source={0};Persist Security Info=False;Mode=Read
I would get the following error:
System.Data.OleDb.OleDbException (0x80004005): The Microsoft Office Access database engine cannot open or write to the file '{0}'. It is already opened exclusively by another user, or you need permission to view and write its data.
My application is running in a windows service under the local system account.
I think that has to be handled either by user permissions that the DB admin would control, or with different cursor types for your recordsets, which you would control. I don't think the connection string specifies access mode, it just gets you there. ;)
The real problem is that Excel leaves the connection open until the file is closed.
In Excel 2007+, the MaintainConnection setting is set to true by default. You need to go into the vb editor and use code to turn it to false. I haven't seen a way to do this through the visual interface.
Even if you set the connection string to readonly, it will lock an access database (from my experience).
For a pivottable connection:
Sheets("sheet1").PivotTables("pivottable1").PivotCache.MaintainConnection = False
For QueryTable:
Range("A2").Select
Selection.ListObject.QueryTable.MaintainConnection = False
Selection.ListObject.QueryTable.Refresh BackgroundQuery:=False
By setting it to false, the table will connect, run the command, then disconnect, releasing the lock.
In the web-application I'm developing I currently use a naive solution when connecting to the database:
Connection c = DriverManager.getConnection("url", "username", "password");
This is pretty unsafe. If an attacker gains access to the sourcecode he also gains access to the database itself. How can my web-application connect to the database without storing the database-password in plaintext in the sourcecode?
You can store the connection string in Web.config or App.config file and encrypt the section that holds it. Here's a very good article I used in a previous project to encrypt the connection string:
http://www.ondotnet.com/pub/a/dotnet/2005/02/15/encryptingconnstring.html
In .NET, the convention is to store connectionstrings in a separate config file.
Thereon, the config file can be encrypted.
If you are using Microsoft SQL Server, this all becomes irrelevant if you use a domain account to run the application, which then uses a trusted connection to the database. The connectionstring will not contain any usernames and passwords in that case.
I can recommend these techniques for .NET programmers:
Encrypt password\connection string in config file
Setup trusted connection between client and server (i.e. use windows auth, etc)
Here is useful articles from CodeProject:
Encrypt and Decrypt of ConnectionString in app.config and/or web.config
Unless I am missing the point the connection should be managed by the server via a connection pool, therefore the connection credentials are held by the server and not by the app.
Taking this further I generally build to a convention where the frontend web application (in a DMZ) only talks to the DB via a web service (in domain), therefore providing complete separation and enhanced DB security.
Also, never give priviliges to the db account over or above what is essentially needed.
An alternative approach is to perform all operations via stored procedures, and grant the application user access only to these procs.
Assuming that you are using MS SQL, you can take advantage of windows authentication which requires no ussername/pass anywhere in source code. Otherwise I would have to agree with the other posters recommending app.config + encryption.
Create an O/S user
Put the password in an O/S environment variable for that user
Run the program as that user
Advantages:
Only root or that user can view that user's O/S environment variables
Survives reboot
You never accidentally check password in to source control
You don't need to worry about screwing up file permissions
You don't need to worry about where you store an encryption key
Works x-platform