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Parameterized Dimension Security
Parameterized Dimension Security

... created to contain one or more views. It is often a requirement to create these books and views in a development environment. The books and views can then be migrated to production. The separation between your development and production books can be either done on a single PAS Server or with two PAS ...
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Nov-30-information-e..

... Rules/extraction patterns: manual, machine learning, and hybrid Applying extraction patterns to extract new information ...
Understanding Transactions
Understanding Transactions

... Available for all Firebird isolation levels. Tables are reserved for the specified access when the transaction is started (prevent possible deadlocks and update conflicts that can occur if locks are taken only ...
Document
Document

... – Eliminate costly and complex scripts for reporting – Reduce reporting costs for specific compliance audits ...
Final CIS 300 Test Reviews
Final CIS 300 Test Reviews

... numbers or names, arrays, or references that contain numbers. •Criteria_range1, criteria_range2, … Criteria_range1 is required, subsequent criteria_ranges are optional. 1 to 127 ranges in which to evaluate the associated criteria. •Criteria1, criteria2, ... Criteria1 is required, subsequent criteria ...
RAMP' up your storage options - strategies for warehouse repositories
RAMP' up your storage options - strategies for warehouse repositories

... pulled from a data warehouse or other data sources for storage in a matrix-like format for fast and easy access by tools such as multidimensional viewers. The SAS/MDDB is a read-only data storage structure containing summarized information. The SAS MDDB object follows a two step methodology for prov ...
The SAS System in a Data Warehouse Environment
The SAS System in a Data Warehouse Environment

... in the creation phase of the MDDB. Levels with valid values are stored, thus addressing the "sparsity" problem in the first phase. This step has shown significant reduction in size of data as compared to the target base table. Some of this reduction is due to subsetting the number of columns retaine ...
Transaction manager
Transaction manager

... • In practice DBMS doesn’t test serializability, it uses protocols (to be discussed). Recoverability: Effect a schedule where, for each pair of transactions Ti and Tj, if Tj reads a data item previously written by Ti, then the commit operation of Ti precedes the commit operation of Tj. II.I Selected ...
Sedna: native XML database management system (internals overview)
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... All inter-node pointers are made direct, except for parent pointers implemented via indirection table to guarantee the fixed number of pointer modifications involved into any node updating. In our storage we separate the structural part of an XML node (i.e. markup) and text value. The text value rep ...
The IBM Business Intelligence Software Solution
The IBM Business Intelligence Software Solution

... IBM sees up to three levels of information store being used to manage business information. This three-level architecture is based on existing data warehousing concepts, but as has already been mentioned, other types of information, for example, multimedia data, can also be supported. At the top lev ...
The SAS System in a Data Warehouse Environment
The SAS System in a Data Warehouse Environment

... specified consolidations ahead of time is improvement in access time when requested by the client application. On the down side. sparsity is reintroduced. because consolidating within the definitions of a hierarchy raises the possibility requesting summaries or crossings with no data. See Figure 6 i ...
SQL: Queries, Programming, Triggers
SQL: Queries, Programming, Triggers

... Attr2, where op is one of , , , , , ) combined using AND, OR and NOT. DISTINCT is an optional keyword indicating that the answer should not contain duplicates. Default is that duplicates are not eliminated! ...
CS 245: Database System Principles
CS 245: Database System Principles

... Notes 01: Introduction Arthur Keller CS 277 - Winter 2002 ...
XML
XML

... Other applications with complex and interrelated objects and procedural data. ...
Using SAS with Oracle to Add a Replica of a Large Operational Database to a Data Warehouse
Using SAS with Oracle to Add a Replica of a Large Operational Database to a Data Warehouse

... different buffsizes -- one to optimise the updating of the database, and the other to optimise the query access. One view descriptor was used to select all fields in the tables. The third descriptor was created for the users and provided read only access. At this stage, the users have two view descr ...
SQL Statements
SQL Statements

... Compared to Tag Groups where grouping happens in form of columns, Tag Distribution means multiple records per query while each record can contain data for a different tag. To achieve this, a field must be provided in the query which contains the tagname or the alias tagname. This option is very effi ...
INT7016 – Contemporary Issues in Database Development
INT7016 – Contemporary Issues in Database Development

... DBWR manages the database buffer cache so that user processes can always find free buffers as needed.(picture) The DBWR Process  Writes all changed (modified) data buffers to the appropriate data files  Uses an LRU algorithm to keep the most recently used data blocks in memory while aging out the ...
as a PDF
as a PDF

Moving to 64-bit SQL Server 2005
Moving to 64-bit SQL Server 2005

... Decreased memory usage Quicker connection times Perceived as a more “native” implementation since it uses threads versus processes No changes required for client applications Can perform faster than Process model for CPU-intensive operations ...
DESIGN AND IMPLEMENTATION OF THE LOST AND FOUND WEB
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... This chapter presents the match engine. Topics that are discussed here include reason why the engine was created, the problem that it solves, other possible approach es to solving the same or similar problems and why there were not chosen for this project, the theory behind the implementation of the ...
Title Goes Here - Binus Repository
Title Goes Here - Binus Repository

... • For embedded SQL, the level is set at bind time • For dynamic SQL, the level is set at run time Bina Nusantara University ...
chapter8 slides Fichier
chapter8 slides Fichier

... and transformation (for instance, change the data type of an attribute, add a column, remove duplicates, and so on) _ We denote these tasks unary data tasks since they receive one input flow _ n-ary data tasks receive as input more than one flow (e.g., this is the case of union, join, difference,... ...
Don`t Be Afraid - New York Oracle User Group
Don`t Be Afraid - New York Oracle User Group

... Not really, but what you are doing with default auditing is the better question. ...
ECP2.1 Upgrade Client
ECP2.1 Upgrade Client

... This chapter describes shortly how to change the case sensitivity on MSSQL database. 1. Use the SQL Server Management Studio to export the data. It has a comprehensive export wizard which leads you through the whole process of generating scripts. Please consult the manual to the SQL Server Managemen ...
Berkeley DB Proceedings of the FREENIX Track: 1999 USENIX Annual Technical Conference
Berkeley DB Proceedings of the FREENIX Track: 1999 USENIX Annual Technical Conference

... 1.4. Applications that use Berkeley DB Berkeley DB is embedded in a variety of proprietary and Open Source software packages. This section highlights a few of the products that use it. Directory servers, which do data storage and retrieval using the Local Directory Access Protocol (LDAP), provide na ...
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Relational model



The relational model for database management is an approach to managing data using a structure and language consistent with first-order predicate logic, first described in 1969 by Edgar F. Codd. In the relational model of a database, all data is represented in terms of tuples, grouped into relations. A database organized in terms of the relational model is a relational database.The purpose of the relational model is to provide a declarative method for specifying data and queries: users directly state what information the database contains and what information they want from it, and let the database management system software take care of describing data structures for storing the data and retrieval procedures for answering queries.Most relational databases use the SQL data definition and query language; these systems implement what can be regarded as an engineering approximation to the relational model. A table in an SQL database schema corresponds to a predicate variable; the contents of a table to a relation; key constraints, other constraints, and SQL queries correspond to predicates. However, SQL databases deviate from the relational model in many details, and Codd fiercely argued against deviations that compromise the original principles.
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