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ANU Metadata Stores
ANU Metadata Stores

... component of the web services it serves information to clients. 2. Metadata Store Web Services The Metadata Store Web Services provide access for external clients to retrieve information from the Metadata Store. The web service provides the ability to perform some queries to find the data and serves ...
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... • One size does not fit all – choice is good *IDC, “Worldwide Professional Developer Model”, June 2007; Evans Data Corp, “Global Developer Population And Demographics Report”, September 2006 ...
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Oracle/SQL Tutorial - Department of Math/CS

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... Create an index on one or more columns. CREATE INDEX index ON table (column[, column]...); ...
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... Recommendation: For large tables use 10% sampling, but you must test and try different values. The right answer could be 5% or 50%. SEAS06 - VLDB Management & Operation ...
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...  average mark 22.8 out of 60  higher than expected no response, indicating that candidates were unfamiliar with several areas of content  stronger performance in questions associated with the predecessor Advanced Higher Computing qualification  weaker performance in questions associated with the ...
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UNLOADing Data from Informix
UNLOADing Data from Informix

... data warehouses. These systems require database software that is specially designed to reduce load time, query response time, and administrative overhead. Commercial database management systems (DBMS) for MPP data warehouses include IBM’s DB2 Enterprise Edition and the Informix Extended Parallel Ser ...
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document-centric XML - McGraw Hill Higher Education
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Object-Oriented Development in a Relational World
Object-Oriented Development in a Relational World

... How does DeKlarit get the RefereeName into the ConventionEvent? Because RefereeID is the primary key for a structure elsewhere, DeKlarit’s generated code for the ConventionEvent structure will do the join to pull the RefereeName out of the Referee table. This provides the programming convenience we ...
Dynamic Query Forms for Database Queries
Dynamic Query Forms for Database Queries

... capture a user’s preference and rank query form components, assisting him/her to make decisions. The generation of a query form is an iterative process and is guided by the user. At each iteration, the system automatically generates ranking lists of form components and the user then adds the desired ...
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... Database Applications • Database – Data structure built out of logical relations – Affords data manipulations through queries ...
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... 78. A database designed using spreadsheets from the Sales department is a database being designed ________. A) from existing data B) as a new systems development project C) as a redesign of an existing database D) A and B E) A, B, and C 79. A database designed to implement requirements for a reporti ...
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... For larger systems, a tape backup or other Enterprise level system should be installed onto your computer. Do not purchase the cheap brands as they consistently fail. For smaller systems, a good, reasonably priced backup system that is currently very popular is 'writable DVD’s, or external hard driv ...
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... This is a special case of referential integrity: A2 must be a candidate key of R2 (e.g., CrsCode is a key of Course in the above) If no row exists in R2 => violation of referential integrity Not all rows of R2 need to be referenced: relationship is not symmetric (e.g., some course might not be taugh ...
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USE Banks

... Union * unions all the tables of the selected multitable  It scales to all the tables named br% of Banks, if new banks enters the MDB Banks in the future Current DBMS, e.g., SQL Server, require to alter the union view definition in such a case ...
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... What can be updated/modified in the database and when? 1. It is OK to update values in any non-PK fields, provided that referential integrity and business rules are respected 2. It is OK to update values in the PK in one table if it is not linked to a FK in another table, provided that entity integr ...
Importing Data into a Relational Database using Append Queries
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... Importing Data into a Relational Database using Append Queries. Data can be imported into a database from a text file using append queries. This method is a good way of finding any invalid data (rejected records) and is also used when a primary key is missing in the text file. Create the database ta ...
kiferComp_348761_ppt14
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Preface
Preface

... transition to UML in 1999 and have found it much easier to sue to teach modeling concepts. The feedback we received from the two editions of the previous version of this book, Database Solutions, was fully supportive of the UML notation. (3) UML is now being adopted within academia for teaching obje ...
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SQL

SQL (/ˈɛs kjuː ˈɛl/, or /ˈsiːkwəl/; Structured Query Language) is a special-purpose programming language designed for managing data held in a relational database management system (RDBMS), or for stream processing in a relational data stream management system (RDSMS).Originally based upon relational algebra and tuple relational calculus, SQL consists of a data definition language, data manipulation language, and a data control language. The scope of SQL includes data insert, query, update and delete, schema creation and modification, and data access control. Although SQL is often described as, and to a great extent is, a declarative language (4GL), it also includes procedural elements.SQL was one of the first commercial languages for Edgar F. Codd's relational model, as described in his influential 1970 paper, ""A Relational Model of Data for Large Shared Data Banks."" Despite not entirely adhering to the relational model as described by Codd, it became the most widely used database language.SQL became a standard of the American National Standards Institute (ANSI) in 1986, and of the International Organization for Standardization (ISO) in 1987. Since then, the standard has been revised to include a larger set of features. Despite the existence of such standards, though, most SQL code is not completely portable among different database systems without adjustments.
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