O - Definitions
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O
OLTP (online transaction processing)
OLTP (online transaction processing) is a class of software programs capable of supporting transaction-oriented applications on the Internet.
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Open Blueprint
Open Blueprint is IBM's strategic view of the network computing services and the relationship between these services.
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Open Compute Project
The Open Compute Project is an initiative started by Facebook to share efficient server and data center designs with the general IT industry.
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open data center
An open data center is an IT facility that employs a clearly defined and standardized set of hardware and software products designed to make the data center interoperable with other IT facilities.
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Open Rack
The Open Rack specification is an open standard for server racks designed to integrate with other parts of Facebook's Open Compute Project (OCP).
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Open Vault
Open Vault is an open-source storage specification created by Facebook and the Open Compute Project (OCP).
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OpenPower Foundation
The OpenPower Foundation is an organization in which IBM shares its Power microprocessor technology with licensed members.
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OS/390
OS/390 is the IBM operating system most commonly installed on its S/390 line of mainframe server.
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out-of-order execution (OoOE)
Out-of-order execution (OoOE) is an approach to processing that allows instructions for high-performance microprocessors to begin execution as soon as their operands are ready.