Welcome to the Denodo Platform 8.0 Documentation¶
To upgrade to Denodo 8.0 from Denodo 7.0, 6.0…, follow the instructions of the Upgrade Guide. The VQL statements generated by previous versions of Denodo cannot be imported directly into Denodo 8.0.
The user manuals were updated on Sep 22, 2021. See the latest changes in the page What Is New in Denodo 8.0 Update 20210715.
In the user manuals of Denodo, you will find the information you need to install and configure Denodo, and perform all the administrative and users tasks.
You can browse the contents on the left or use the search box at the top to search specific topics and also, to search on the entire Denodo Community.
If you are new to Denodo, here are some resources that are useful:
Watch the video Data Virtualization: An Overview: a high level of explanation of what Data Virtualization is and what Denodo does.
Denodo Express: a free version that includes most of the features of the Denodo Platform. You can install it on your machine, an AWS EC2 instance…
You can request a 30-day free trial of Denodo Standard (find below the differences between Denodo Platform vs Denodo Standard).
Test Drives: with the Test Drives you can quickly and easily explore the benefits of using data virtualization with Denodo Platform on the cloud. It is free of charge for demonstration, education and evaluation purposes. You do not need to install anything; everything is provisioned automatically for you on the cloud.
Knowledge Base: find here articles, how-to-guides and FAQs about the Denodo Platform.
Tutorials. These step-by-step tutorials cover several topics: how to develop Data Virtualization projects with Denodo, how to build data combinations that come from different data sources, how to expose virtualized data as a service, and more.
Training: the Denodo training courses provide training for data professionals, including administrators, architects, and developers. These courses are specifically designed to help our customers build leading-edge data solutions that address your organization’s data integration and information management needs. There are on-demand and live courses. To sign up for these courses, go to the Training page.
What is Denodo?¶
Data virtualization is a logical data layer that integrates all enterprise data siloed across the disparate systems, manages the unified data for centralized security and governance, and delivers it to business users in real time. Data virtualization is the modern approach to data integration. Unlike ETL solutions, which replicate data, data virtualization leaves the data in source systems, simply exposing an integrated view of all the data to data consumers. Find more information about this at https://www.denodo.com/en/data-virtualization/benefits.
The Denodo Platform is the leader in Data Virtualization.
These guides explain how to install and use:
The Denodo Platform and its Feature Packs
They are all built on the same engine but #2 and #3 Denodo Standard and Denodo Express have some restrictions. See more in Denodo Platform - Feature Packs, Restrictions of Denodo Standard and Restrictions of Denodo Express).
Modules of the Denodo Platform¶
The Denodo Platform has these modules:
The main module of the Denodo Platform. This is the module where developers create “virtual views” that integrate data from multiple sources: databases, SAP servers, XML files, JSON files, CSV files, etc.
Virtual DataPort provides several ways to query these virtual views:
Aimed at business users, to query and search data and metadata of your organization.
Enables you to schedule jobs to interact with the other modules of the Denodo Platform. For example, send queries to Virtual DataPort at a particular moment and process its result.
Diagnostic and Monitoring Tool
Provides two main features:
Provides an easy way to query semi-structured and non-structured data from the Web.
The Solution Manager helps you manage your deployment of Denodo servers. It consists of two components:
These modules are provided in two installers (i.e. two different packages you have to download from the Denodo Support Site):
The installer of the Solution Manager.
The installer of the Denodo Platform, Denodo Standard or Denodo Express. These include Virtual DataPort, Data Catalog, Scheduler, Diagnostic and Monitoring Tool and ITPilot.
That is, you will have to perform at least two installations: one installation of the Solution Manager and one or more installations of the Denodo Platform. Unless you are doing an evaluation, you will install the Solution Manager in one computer and the installation of each Denodo Platform in other computers.
The Solution Manager Installation Guide explains how to install the Solution Manager.
The Denodo Platform Installation Guide explains how to install the Denodo Platform.
Structure of the Documentation¶
The documentation of Virtual DataPort is divided in three documents:
It presents the fundamental concepts of the Data Virtualization.
It explains how to use the Virtual DataPort administration tool to build unified views of data from distributed and heterogeneous sources.
It explains how to configure and manage the Virtual DataPort server.
How to access a Virtual DataPort server using the Denodo JDBC and ODBC drivers to query Denodo from your applications.
How to use the API provided Virtual DataPort to develop custom extensions: stored procedures, wrappers to new sources, functions, security policies and filters.
It is a reference manual for the VQL language (Virtual Query Language).
VQL and is the language provided by Virtual DataPort to query views, manage elements in Virtual DataPort (data sources, views, web services, etc.) and perform programmatically almost any of the tasks that you can perform from the administration tool.
VQL is highly compatible with SQL.
Diagnostic & Monitoring Tool¶
The Diagnostic & Monitoring Tool Guide explains how to use the Diagnostic & Monitoring Tool to:
Display the real time status of one or more Virtual DataPort servers
Diagnose past issues by processing the log files generated by Virtual DataPort.
The documentation of the Solution Manager is divided in two documents:
The module “ITPilot” is deprecated.
The documentation of ITPilot is divided in five documents:
Describes how to use the ITPilot Wrapper Generation Tool. With this tool you can graphically create wrappers that extract data. These are flows comprising different components; each component applies a specific function on a group of inputs and produces one output.
Explains how to deploy the generated wrappers in the ITPilot running environment.
Explains how to develop applications that use the wrappers generated with Denodo ITPilot.
Describes how to use the API offered by Denodo ITPilot.
Explains how to create custom ITPilot functions.
Provides a reference of the DEXTL (Data Extraction Language) language, which allows you to extract data from HTML pages.
Usually you do not need to create DEXTL programs manually because with the ITPilot Generation Environment, you can create DEXTL programs graphically in a simpler way. Nevertheless, this manual provides an exhaustive description of the language for advanced users.
Describes in detail the automated NSEQL language (Navigation SEQuence Language) used in Denodo ITPilot.
Provides an introduction to Denodo ITPilot.
Describes the functioning environments of Denodo ITPilot
The configuration of each of the Denodo ITPilot components in the execution and verification environments.
Two modules of the Denodo Platform have been deprecated and may be removed in the next major version of the Denodo Platform:
Aracne (see section The Aracne Module Has Been Deprecated)
ITPilot (see Features Deprecated in Denodo Platform 8.0)
The page Features Deprecated in Denodo Platform 8.0 lists all the features that are deprecated.