Why Should I Check Out a MySQL-Based Column Database ?

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02-12-2010

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Why Should I Check Out a MySQL-Based Column Database ?

Some technologies come on the information technology landscape and stay, providing long-lasting benefits, whereas others are more of a short term fad and ultimately end up disappearing because the value they supplied was too niche oriented and/or they were quickly supplanted by another technology that is better. Recently, articles, blogs, analyst reports, and other media outlets have been noting the rise and usage of column-oriented databases in the areas of data warehousing, analytics, and other business intelligence/read-intensive situations. And on the MySQL front, there are a couple of column DB's that are now available for you to use. Are column-oriented databases a technology that is destined to stay and provide long-term benefits or will it be relegated to the forgotten pile of other software that came on the scene quickly and then disappeared?

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LEARN ABOUT CENTOS

systemd-detect-virt

SYSTEMD-DETECT-VIRT(1)						systemd-detect-virt					    SYSTEMD-DETECT-VIRT(1)

NAME

       systemd-detect-virt - Detect execution in a virtualized environment

SYNOPSIS

       systemd-detect-virt [OPTIONS...]

DESCRIPTION

       systemd-detect-virt detects execution in a virtualized environment. It identifies the virtualization technology and can distinguish full VM
       virtualization from container virtualization.

       When executed without --quiet will print a short identifier for the detected virtualization technology. The following technologies are
       currently identified: qemu, kvm, vmware, microsoft, oracle, xen, bochs, chroot, uml, openvz, lxc, lxc-libvirt, systemd-nspawn.

       If multiple virtualization solutions are used, only the "innermost" is detected and identified. That means if both VM virtualization and
       container virtualization are used in conjunction, only the latter will be identified (unless --vm is passed).

OPTIONS

       The following options are understood:

       -h, --help
	   Prints a short help text and exits.

       --version
	   Prints a short version string and exits.

       -c, --container
	   Only detects container virtualization (i.e. shared kernel virtualization).

       -v, --vm
	   Only detects VM virtualization (i.e. full hardware virtualization).

       -q, --quiet
	   Suppress output of the virtualization technology identifier.

EXIT STATUS

       If a virtualization technology is detected, 0 is returned, a non-zero code otherwise.

SEE ALSO

       systemd(1)

systemd 208														    SYSTEMD-DETECT-VIRT(1)