Download Database Administration: The Complete Guide to Practices and by Craig S. Mullins PDF

By Craig S. Mullins

With Database management, database pros now have a finished sourcebook of innovations for providing caliber management throughout modern demanding multi-DBMS environments. full of functional guidance and techniques, this e-book presents the main accomplished survey to be had of the administrator's global for the present or aspiring database professional.Part instructional and half reference, Database management explains and examines all the elements that include the self-discipline of database management. The booklet opens by means of delivering an summary of the duties of database directors (DBAs) in addition to a few of the "flavors" of DBAs and their initiatives. From there, the publication proceeds chronologically via each job a DBA is probably going to come across. even supposing designed as a entire survey of the complete DBA atmosphere, the book's person chapters also are compatible for speedy look-up of particular info.

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E-businesses must be able to adapt and react to constant change. When a business is online, it never closes. People expect full functionality on Web sites they visit regardless of the time. And the Web is worldwide. It may be two o'clock in the morning in New York City, but it is always prime time somewhere in the world. An e-business must be available and prepared to engage with customers 24 hours a day, 365 days a year (366 during leap years). Failure to do so risks losing business. When a Web site is down, the customer will go elsewhere to do business because the competition is just a simple mouse-click away.

Business politics often work against the DBA group because the DBA group frequently possesses less organizational power than other business executives. The DBA group should be empowered to make the DBMS decisions for the organization. Choosing a DBMS The DBA group should set a policy regarding the DBMS products to be supported within the organization. Whenever possible, the policy should minimize the number of different DBMS products. For a shop with multiple operating systems and multiple types of hardware, choose a default DBMS for the platform.

The final aspect of integrity comprises internal DBMS issues. The DBMS relies on internal structures and code to maintain links, pointers, and identifiers. In most cases, the DBMS will do a good job of maintaining these structures, but the DBA needs to be aware of their existence and how to cope when the DBMS fails. Internal DBMS integrity is essential in the following areas: • Index consistency. An index is really nothing but an ordered list of pointers to data in database tables. If for some reason the index gets out of sync with the data, indexed access can fail to return the proper data.

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