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So How Can You Ensure a High-Performing Database?

We good RDBMS designers actually have two choices: Force the real world to bend to our technological reality, or accept that technology exists to serve our clients.

The first option leads us to tell our perpetual teenager, the baseball superstar, that he cannot ever change teams. This approach will cause conflict with his agent, Fantasy League participants, and George Steinbrenner. Ignoring the first two, how can we tell George that he can't spend his money? (Okay, okay, you small-market city residents, please stop volunteering.) So let's eliminate this option by paying homage to our fear of lawsuits by the agents.

The second option leads us to a simple solution: Use only sequentially increasing numbers to implement relationships. Many of the RDBMS products support them directly. Such numbers are relatively short, so many will fit in a leaf block, and new rows will always be added at the end, heading off any mid-domain bulge!

Avoid the temptation to use naturally occurring data: Carry it in the row and build a separate index on it to speed retrievals.

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Collection and Use of Information


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Customer Service

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Other Collection and Use of Information


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Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

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Children


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Marketing


Pearson may send or direct marketing communications to users, provided that

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Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information


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Sale of Personal Information


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While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to NevadaDesignatedRequest@pearson.com.

Supplemental Privacy Statement for California Residents


California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure


Pearson may disclose personal information, as follows:

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Links


This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact


Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice


We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020