A combination of relational OLAP (ROLAP) and multidimensional OLAP. HOLAP stores data in a both a relational database (RDB) and a multidimensional database (MDDB) and uses whichever one is best suited to the type of processing desired. 

A type of virus that combines characteristics of more than one type to infect both program files and system sectors. The virus may attack at either level and proceed to infect the other once it has established itself.

Hybris is a software company headquartered in Zug, Switzerland, that sells enterprise multichannel e-commerce and product content management (PCM) software. hybris omni-channel commerce solution is built on robust, modular and open architecture, it satisfies all the omni-channel selling and fulfillment needs.

Hyper-convergence (hyperconvergence) is a type of infrastructure system with a software-centric architecture that tightly integrates compute, storage, networking and virtualization resources and other technologies from scratch in a commodity hardware box supported by a single vendor.

An initiative by Microsoft to provide customers with virtualization and virtualization management software and make it easier for a business to virtualize existing server hardware assets and move them to a private or public cloud.   

Oracle Hyperion Financial Management is a financial consolidation and reporting application built with advanced Web technology. Apart from financial Management software product, Hyperion also provides other peripheral products out of which Essbase and Hyperion Planning are two major ones.

Hyperion BI+ 9.3 Administrator Certified Expert by Oracle

An open source collaborative project effort created to advance cross-industry blockchain technologies.

A hypervisor, also called a virtual machine manager, is a program that allows multiple operating systems to share a single hardware host. Each operating system appears to have the host's processor, memory, and other resources all to itself. 

The process of ensuring the hypervisor, the software that enables virtualization, is secure throughout its life cycle, including during development, implementation, provisioning, management and de-provisioning.  

I/O (input/output) fencing is the isolation of a malfunctioning node from a cluster's shared storage to protect the integrity of data.  

I/O virtualization (input/output virtualization or IOV) is the abstraction of upper layer protocols from physical connections or physical transport.

The I2C (Inter-IC) bus is a bi-directional two-wire serial bus that provides a communication link between integrated circuits (ICs). There are three data transfer speeds for the I2C bus: standard, fast-mode, and high-speed mode. 

A provision model in which an organization outsources the equipment used to support operations, including storage, hardware, servers and networking components. The service provider owns and is responsible for the equipments.

IASA Associate Certification (IAC) by IASA

Interactive Application Security Testing (IAST) is a form of application security testing that stems from a combination of dynamic application security testing (DAST) and runtime application self-protection (RASP) technologies. The IAST approach analyzes application behavior in the testing phase, using the RASP runtime agent and DAST as an attack inducer.