Working With HP Vertica
The column-oriented HP Vertica database is designed to manage large, fast-growing volumes of data. This document discusses the special elements in Logi Info and Logi Report for use with this database.
This document is specific to v11.2.040+ of our products. Topics include:
General information about HP Vertica can be found at the official website.
About HP Vertica
The column-oriented HP Vertica RDBMS is designed to manage large, fast-growing volumes of data and provide very fast query performance when used for data warehouses and other query-intensive applications. It claims to drastically improve query performance over traditional relational database systems, to provide high-availability, and offer petabyte-scalability on commodity enterprise servers. A free, feature-limited copy for local use is available for download and subscriptions are available to their hosted service.
In order to use HP Vertica, you need to use a specific Connection element, Connection.Vertica, to connect your Logi application to a Vertica database.
As shown above, the Connection.Vertica element is added to the _Settings definition, beneath the Connections element. Its attributes are then set appropriately for the Vertica datasource.
Special Drivers Required
For a .NET Logi application, you will need to download the Vertica ADO.NET driver and place it in the <yourLogiApp>\bin folder. The driver is available from the My Vertica community web site, which requires you to register and login. Version 126.96.36.199 or later is required.
For a Java Logi application, you will also to download the Vertica JDBC driver and place it in the <yourLogiApp>/WEB-INF/lib folder. The driver is available from the My Vertica community web site, which requires you to register and login. Version 188.8.131.52 or later is required.
In either case, if you want to be able to use Logi Studio's Database Browser and SQL Query Builder tools while working with Vertica, you must download the Vertica ADO.NET driver mentioned above and place it in the bin folder of your Logi Info installation, typically C:\Program Files\LogiXML IES Dev\Logi Studio\bin.
You can use DataLayer.SQL to retrieve data from Vertica but, for best performance with very large datasets, we recommend the use of DataLayer.ActiveSQL.
Vertica uses HP Vertica SQL which is based on standard SQL syntax but has a number of very important differences that you should be aware of as you create your queries. Please refer to the HP Vertica SQL Reference Manual for more information. After the data is retrieved, you may condition, filter, and shape it just as you would any other datalayer data.