In the lazy update, updating take place in uniform interval of time and it is used to update the data item value from read-write site to read-only sites.
All the read-write sites form a cluster and one of them will act as a cluster head.
If an end user tries to access the site, depending upon the transaction that person will be directed to the read-only site or the read-write site.
I use wikis in all of my online classes, so when I saw this title, Using Wikis for Online Collaboration: The Power of the Read-Write Web, I was very excited.
Beginning with the preface, the authors lay out the theoretical framework for utilizing the read-write web to promote interaction, collaboration, and critical thinking.
The new micromachine, a variable-reluctance motor suspended by gimbal springs, moves a data recording read-write head through a range of [+ or -]10 microns just above the surface of a spinning data storage disk and positions it to submicron accuracy.
A conventional magnetic disk-drive system has a voice coil motor that moves a stainless-steel load beam, which is linked through a slider bearing to the read-write head.
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