Using materialized views

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  • After completing this lesson, you should be able to do the following: Create materialized views Refresh materialized views Create nested materialized views Create UNION ALL materialized views Explain the use of query rewrites Enable and control query rewrites

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  • Grammar in use is a textbook for intermediate students of English who need to study and practice using of the language of the language. It can be used as a classroom text or for slef- study. It wil be especially useful where, in the teacher's view, existing course materials do not provide adequate coverage of grammar.

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  • The title of this standard should not be taken to imply that all of the materials quoted are necessarily used solely or even principally in building. This schedule was first published in 1935 as an attempt to provide a solution to the problems which had arisen through structural and other calculations being based on different data for the weights of materials concerned. The 1949 revision was undertaken with a view to making the information more complete by the inclusion of certain extra materials, together with such changes in the data as had been found to be necessary....

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  • Actually different types of classifiers can be set for BCI technology, from physiological point of view BCI devices may be classified in exogenous and endogenous. the external devices to provide some kind of stimulation to users and use them to analyze the respond to them, an example of this class of devices based on evoked potentials or P300 pictures (KM Spencer and E. Donchin and R. Wijesinghe, 2000).

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  • The committee was tasked to determine the best instrumentation and procedures for measuring BFD (see Box S-1). To do this, it reviewed technical specifications, viewed demonstrations of the operation and use of current and prospective systems, and evaluated factors such as human handling variability, process transparency, and software variability judgment. The committee found that given the current clay variation, a measurement precision (standard deviation) of 0.5 mm is sufficient; instruments featuring greater precision add little practical value to the testing process.

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  • When a user with read-only permission logs into the database server, he or she is able to see the geodatabase and the data stored in it. This user can query the database and use the data in ArcMap but cannot edit the data (unless the user is granted read/write permissions on specific datasets. Dataset permissions are discussed in the next section). Users granted read/write geodatabase-wide permissions cannot only view and query the data but can also edit all data in the geodatabase.

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  • Microsoft Office 2007 is the latest-and-greatest version of a long line of versions, starting (not surprisingly) with Version 1. Not that this is the 2,007th version. Somewhere along the way Microsoft switched from using sequential numbers for versions to using years. publishing industry helped her establish a good foundation for developing content for instructional use. Connie became interested in technology when the Radio Shack TRS80 was introduced, and that’s when she began writing her own material and training others to use computers.

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  • Enormous number of books, reviews and original papers concerning engineering applications of heat transfer has already been published and numerous new publications appear every year due to exceptionally wide list of objects and processes that require to be considered with a view to thermal energy redistribution. All the three mechanisms of heat transfer (conduction, convection and radiation) contribute to energy redistribution, however frequently the dominant mechanism can be singled out.

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  • An Introduction to the Study of Mineralogy is a collection of papers that can be easily understood by a wide variety of readers, whether they wish to use it in their work, or simply to extend their knowledge. It is unique in that it presents a broad view of the mineralogy field. The book is intended for chemists, physicists, engineers, and the students of geology, geophysics, and soil science, but it will also be invaluable to the more advanced students of mineralogy who are looking for a concise revision guide....

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  • PowerPoint is the program that helps you sell your message. PowerPoint is a presentation program that can create beautiful slideshows with text, images, audio and video, and it is also the program that is used if you have to make transparencies for the overhead projector. PowerPoint is the program in Office 2007 that is easiest to learn. You can instantly create nice-looking material for your sales pitch, your lecture or the screen in your shop window.PowerPoint can do much of the work for you, so you can concentrate on formulating your messages properly....

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  • There is no general consensus on how to define various risk-related terms, including the term “risk” itself, and people may have different views on how those terms apply to their particular organization. Both fund boards and advisers would benefit from establishing a common understanding of the terms and concepts they use in risk-related discussions, as well as how they apply to their funds. Some advisers include definitions or descriptions of how they view risk and risk management in their board presentations.

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  • The ‘ideology’ of professional regulation can be viewed not simply as a mask for the profession’ s activities but is implicated in the conditions that make accountancy possible. The discourses that surround professions and are promoted by professionals are understood to form an integral part of the social practices that facilitate, maintain and promote the occupation.

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  • Early relational systems used indices as table replicas that allowed vertical partitioning, allowed associative search, and allowed con- venient data ordering. Database optimizers and executors use semi-join on these structures to run common queries on covering indices. These query strategies give huge speedups. These early ideas evolved to materialized views (often maintained by triggers) that went far beyond simple covering indices and provided fast access to star and snowflake schema. In...

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  • The Oracle OLAP option is a full-featured on-line analytical processing (OLAP) server embedded within the Oracle Database. The Oracle OLAP option can be used to improve SQL- based business intelligence tools and applications by improving query performance and enriching them with analytic content. As an OLAP solution that is deeply embedded in the Oracle Database, the Oracle OLAP option allows centralized management of data and business rules in a secure, scalable and enterprise-ready platform..

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  • Scope of decision-making: Amajor factor is the scale at which query processing and viewmaterialization decisions are made. At one extreme, all queries in the entire system are optimized together, using complete knowledge of the available materialized views, resources, and network bandwidth constraints — this poses all of the challenges of multi-query optimization plus a number of additional difficulties. In particular, work must be distributed globally across many peers, and decisions must be made about when and where to materialize results for future use.

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  • Extent of knowledge sharing: Related to the above problem is the question of how much knowledge is available to the system during its query optimization process. In particular, the first step in choosing a query evaluation strategy is likely to be identifying which nodes have materialized views that can speed query processing. A simple technique would be to use a centralized catalog of all available views and their locations, analogous to the central directory used by Napster. Yet this model introduces a single point of failure and a potential scalability bottleneck.

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  • Nanocomposites are at ractive to researchers both from practical and theoretical point of view because of combination of special properties. Many eff orts have been made in the last two decades using novel nanotechnology and nanoscience knowledge in order to get nanomaterials with determined functionality.

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  • In most of the missions a mobile robot has to achieve – intervention in hostile environments, preparation of military intervention, mapping, etc – two main tasks have to be completed: navigation and 3D environment perception. Therefore, vision based solutions have been widely used in autonomous robotics because they provide a large amount of information useful for detection, tracking, pattern recognition and scene understanding. Nevertheless, the main limitations of this kind of system are the limited field of view and the loss of the depth perception....

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  • This report is Part I of the larger project on Internet intermediaries. It develops a common definition and understanding of what Internet intermediaries are, of their economic function and economic models, of recent market developments, and discusses the economic and social uses that these actors satisfy. The overall goal of the horizontal report of the Committee for Information, Computer and Communications Policy (ICCP) is to obtain a comprehensive view of Internet intermediaries, their economic and social function, development and prospects, benefits and costs, and responsibilities.

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  • Wisdom is applied experiential knowledge—knowledge beyond intel- lect—based on an unobstructed, unfiltered view of how things are. It is founded on the ability to accept things as they are as a starting point for meaningful, useful action. This ability to accept things as they are is enabled by working from one’s “center”—that calm, objective place from which action flows in a way that is perfectly appropriate to the situation at hand. Everyone can experience a sense of inner peace. Everyone has the ability to take a step back to see things objectively.

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