We have Stage database, which contains stored procedures, and transfers data into an OLTP Database.
Do Elastic SQL Databases reside on same server, and give ability to conduct cross-db stored procedure transactions?
Would Elastic databasepool allow this?
https://learn.microsoft.com/en-us/azure/sql-database/sql-database-elastic-pool
You can achieve elastic transactions spanning across databases using .NET client applications. This is currently under preview.
Elastic transactions at server side are planned in future.
for more information
Related
I am new to Azure and have no prior experience or knowledge regarding working with Azure data warehouse systems (now Azure Synapse Analytics Framework)
I have access to a "read only" data warehouse (not in Azure) that looks like this:
I want to replicate this data warehouse as it is on Azure cloud. Can anyone point me to the right direction (video tutorials or documentation) and the number of steps involved in this process? There are around 40 databases in this warehouse. And what if I wanted to replicated only specific ones?
We can't do that you only have the read only permisson. No matter which data warehouse, we all need the server admin or database owner permission to do the database replicate.
You can easily get this from the all documents relate to the database backup/migrate/replicate, for example: https://learn.microsoft.com/en-us/sql/t-sql/statements/backup-transact-sql?view=sql-server-ver15#permissions,
If you have enough permission then you can to that. But for Azure SQL datawarehouse, now we called SQL pool (formerly SQL DW), we can't replicate other from on-premise datawarehouse to Azure directly.
The official document provide a way import the data into to Azure SQL pool((formerly SQL DW)):
Once your dedicated SQL pool is created, you can import big data with
simple PolyBase T-SQL queries, and then use the power of the
distributed query engine to run high-performance analytics.
You also could use other ETL tool to achieve the data migration from on-premise datawarehouse to Azure. For example using Data Factory, combine these two tutorials:
Copy data to and from SQL Server by using Azure Data Factory
Copy and transform data in Azure Synapse Analytics by using Azure
Data Factory
We are in the process of developing a web application that we want to host on Azure, where the storage size of the SQL database database is expected to reach 100 TB.
The issue is the max size of the Azure SQL database is currently 4 TB which too small in our case.
Knowing the fact that we are using DTU pricing model, is there any workaround for this issue?
You need to scale out by using SQL elastic pool. You will be using shard database, in other words creating different Azure SQL databases. Azure SQL elastic pool will make it easier to manage the database and query the data in a simple way using one Azure SQL Database elastic query.
I recommend reading the following documents from Microsoft docs:
sql-database-elastic-scale-introduction
sql-database-elastic-scale-shard-map-management
sql-database-elastic-query-overview
I have a requirement of a syncing set of tables (with data) to a different database from our production database. This is an Azure SQL DB.
I created replicated DB (using Azure Geo Replication) and it is a read-only DB. My plan was to enable SQL Server Change Tracking (CT) in replicated DB and query those changes from Change Tables, so that Production DB will not have any impact because of change tracking. But then I found out it is not possible to enable Change Tracking or even access Change Tables in the DB replica I created.
Then I saw Azure 'Sync to other databases' feature and tried it out with the replicated DB. But it is also not possible since this feature does not support syncing data from a read-only db.
1) What is the solution for this? I cannot afford using 'Sync to other databases' feature on my Production db, because it uses DB Triggers to track these changes.
On the other hand, I cannot afford to enable CT in Production DB either.
2) Is there a way of enabling and tracking changes using CT from a replicated DB?
3) Or is there a way to use 'Sync to other databases' feature with a replicated DB?
The application trying to build is an analytics application. So I am trying to get data I want from a couple of other production DBs.
Thank you.
I'm researching the differences between AWS and Azure for my company. We going to make an web-based application. Which is going to be across 3 regions, each region needs to have a MS SQL database.
But I can't figure how to do the following with AWS: the databases need to sync between each region (2 way). So the data stays the same on every Database.
Why we want this? For example a customer* from Eu adds a record to the database. Now this database needs to sync with the other regions. Resulting that a customer form the region US can see the added records. (*Customers can add products to the database)
Do you guys have any idea how we can achieve this?
it's a requirement to use Ms SQL.
If you are using SQL on EC2 instances then the only way to achieve multi-region, multi-master for MS SQL Server is to use Peer-to-Peer Transactional Replication, however it doesn't protect against individual row conflicts.
https://technet.microsoft.com/en-us/library/ms151196.aspx
This isn't a feature of AWS RDS for MS SQL, however there is another product for multi-region replication that's available on the AWS marketplace, but it only works for read replicas.
http://cloudbasic.net/aws/rds/alwayson/
At present AWS doesn't support read replicas for SQL server RDS databases.
However replication between AWS RDS sql server databases can be done using DMS (database migration service). Refer below link for more details
https://aws.amazon.com/blogs/database/introducing-ongoing-replication-from-amazon-rds-for-sql-server-using-aws-database-migration-service/
I have a WinForms business application that connects to a SQL Server on a server within the business network. Recently we have added an ASP.NET web site so some of the information within the system can be accessed from the Internet. This is hosted on the same server as the SQL Server.
Due to the bandwidth available to the business network from the Internet we want to host the web site with a provider but it needs access to the SQL Server database.
95% of data changes are made by the business using the WinForms application. The web site is essentially a read only view of the data but it is possible to add some data to the system which accounts for the other 5%.
Is replication the best way to achieve the desired result e.g. SQL Server within the business network remains the master database as most changes are made to this and then replicate this to the off site server? If so which type of replication would be the most suitable and would this support replicating the little data entered from the ASP.NET web site back to the main server?
The SQL Server is currently 2005 but can be upgraded as required for any replication requirements.
Are there other solutions to this problem?
Yes, since the web application is causing 5% (max) transaction; you can separate it.
I mean, you can have a different DB which is a carbon copy of the master one and have web application point to this DB.
You can setup a bi-directional transaction replication. So that, transaction made to the master DB will get replicated as well as transaction made to the secondary DB will be replicated as well.
No need of upgrading; as SQL Server 2005 supports replication.
For further information check MSDN on replication here: Bidirectional Transactional Replication
In a Nutshell, here are the steps you would do:
Take a full backup pf the master DB
Restore the DB to newly created DB server
Configure trans replication between them.
For better performance, you can also have the primary DB mirrored onto someother DB server.