We use Flyway with our AWS RDS MySQL and Redshift instances, and it is working great! We are considering switching from RDS MySQL to RDS Aurora. Amazon says that Aurora is MySQL compatible, but wanted to know if there are any known incompatibilities between Aurora and Flyway?
Based on the AWS Aurora product details:
Amazon Aurora is designed to be compatible with MySQL 5.6, so that existing MySQL applications and tools can run without requiring modification.
Given that you're migrating from MySQL database, you won't even need to change the JDBC driver for the Flyway config. I have been using Flyway together with AWS Aurora for a while and haven't noticed any issues.
I am not familiar with flyway, but here is main restrictions to use Aurora:
Aurora supports only InnoDB storage engine (MyISAM not supported), so your database should be compatible with it. For example, it means that maximum row size limited to 16Kb.
Geo spatial indexes are not supported
Related
In the past few months Oracle has included an Autonomous Container Database option in the Cloud. I was wondering if it allows for setup and configuration of running R scripts in the Db Engine like how once could previously with Oracle Enterprise Database?
Yes! This is possible since late August 2022: https://blogs.oracle.com/post/oracle-machine-learning-for-r-now-available-for-oracle-autonomous-database
I understand flyway works with Amazon Aurora. Looked at some threads here and tried it as well. Im trying to understand if Flyway works with Aurora Global as well? We are trying to migrate to Global and this is a key consideration
I have question regarding MariaDB ColumnStore:-
Is this free, can use in production system?
Is this the extension of Mariadb (prerequisite is MariaDB) or we can install this alone?
Can install in single machine in Production, give better performance in terms of the column stores?
Does it support all functionality of MariaDB, I mean directly migration from MariaDB to MariaDB columnstore is possible?
Does it support procedure/functions also because I have used vectorwise actian columnar DB and its not supported.
MariaDB ColumnStore is a GPLv2 storage engine that enables columnar storage of data. Currently ColumnStore is distributed in a separate package (found here) that has all MariaDB functionality it was built with.
The latest ColumnStore has the same features as MariaDB 10.2 plus the COLUMNSTORE storage engine. There are also a small set of additional functions that ColumnStore implements (e.g. some extra window functions).
For analytical queries, ColumnStore tables are almost always faster but they are not suited for OLTP workloads. You can have InnoDB and ColumnStore tables in the same database and even do cross-engine joins.
Stored procedures are supported in the same manner as they are in a normal MariaDB installation. The ColumnStore documentation has a list of features that it supports in addition to the base MariaDB functionality.
(Caveat: My knowledge of ColumnStore is limited, so these answers are suspect.
The Question is 22 days old, so I feel the Question deserves some Answer.)
Yes? The manual makes it clear what parts of MariaDB require money to change hands.
ColumnStore used to be available as InfiniDB. But after MariaDB took it on, it became integrated with MariaDB.
(Unclear question) Columnstore has a niche market. It is not practical to attempt answering how its performance compares to non-column-store engines. Perhaps with a discussion of the application we can discuss this further.
All(?) MariaDB functionality is available.
I don't know anything about "vectorwise actian columnar DB".
Are there alternatives to Teradata SQL Assistant {on windows}, possibly freeware?
Heidi is great but it does not support Teradata.
What are the pros and cons of the alternatives?
Teradata Studio and Studio Express are the long term replacements for SQL Assistant from Teradata. They are developed around an Eclipse based IDE and are available to download from Teradata Developer Exchange.
Database .NET is a Free universal database manager for Windows All,
It supports most popular databases, including Teradata database.
Not sure if the reason is price, but the latest version of SQL Assistant is downloadable free from Teradata's website:
http://downloads.teradata.com/download/tools/teradata-studio
You don't have to install everything, just pick and choose what you want.
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I read couple of online documents to get start with the Teradata basics.
I am curious to know what is full client version of Teradata client software to install on Windows/unix/Linux environments? What is best suited for client install?
I see different client versions depends on the type drivers/applications
1. Teradata JDBC
2. Teradata ODBC
3. Teradata dot net provider
4. Teradata SQl assist/BTSE
5. Teradata Express
6. Teradata OLE DB provider
7. TTU .... etc
To more clarity on my Question .. DB2 and Oracle have a full client software which can install locally on windows/unix systems and it will be able to use or all type connectivity(odbc,jdbc,ole db,ado .net...etc)
Typical base toolset for end users/developers submitting ad hoc queries from each environment:
Windows (TTU 13.10 Client Install - 400MB)
Teradata SQL Assistant
Teradata .Net Provider and/or ODBC Driver
Teradata GSS & ICU Libraries
(Optional) WinBTEQ
(Optional) Teradata CLI - for WinBTEQ
Linux/UNIX/Mac OS X
Teradata JDBC Driver
Teradata Studio Express
(Optional - if using Eclipse)Teradata Plug-in for Eclipse
Many of these components can be found in the Teradata Developer's Exchange Downloads section. Starting with Teradata 12 they have reset the version numbers in an attempt to address the confusion with the different development life cycles of each component contained within their Tools and Utilities. Tools for Teradata 13.x should be compatible with Teradata 12 and Teradata 14. However, certain features specific to a given database release may not be available unless you are using a version of the client that is equal to or greater than the database version.
For ETL Development, then you will be relying upon the BTEQ, FastLoad, FastExport, MultiLoad combined with the Teradata CLI to connect to Teradata.
This answer is for Windows only.
To run queries against a Teradata database, you need the following:
Teradata SQL Assistant
Teradata .NET Data provider
Teradata ODBC Driver
To know, if your system has Teradata ODBC Driver, goto Control Panel, Administrative Tools -> Data Sources -> Add and see if Teradata is listed.
Sample screenshot below:
If you are working on new database and ( if you have license to use ), you can have a look at Teradata parallel transporter. It provides extract-load capabilities with configurable scripts.