Lecture Notes
... important to the task at hand where the items were stored physically; you are concerned with the logical idea of the two items coming together to help you accomplish the task. The physical view of data focuses on where the data are actually stored in the record or in a file. The physical view is imp ...
... important to the task at hand where the items were stored physically; you are concerned with the logical idea of the two items coming together to help you accomplish the task. The physical view of data focuses on where the data are actually stored in the record or in a file. The physical view is imp ...
Innovation, Implementation, and Integration: Building a DataWarehouse with SAS® Data Integration Studio and MS SQL Server
... unload the tables to text files. The text files are then copied to our SAS Workspace Server. We then proceed to compare today’s text files with yesterday’s. This allows us to find all relevant changes, and split them into 2 tables – one containing records to be created, and the other containing reco ...
... unload the tables to text files. The text files are then copied to our SAS Workspace Server. We then proceed to compare today’s text files with yesterday’s. This allows us to find all relevant changes, and split them into 2 tables – one containing records to be created, and the other containing reco ...
566-607 - CrystalScope
... "struct," as used in C or similar languages, do not have their offsets stored when the program is running; rather the offsets are compiled into the application programs that access the struct. However, there are several reasons why the record schema must be stored and accessible to the DBMS. For one ...
... "struct," as used in C or similar languages, do not have their offsets stored when the program is running; rather the offsets are compiled into the application programs that access the struct. However, there are several reasons why the record schema must be stored and accessible to the DBMS. For one ...
Reading Report 2 - Informatics Homepages Server
... referenced objects and return. If the referenced objects also have references, further group the key pairs and store the reference object at the same site. ...
... referenced objects and return. If the referenced objects also have references, further group the key pairs and store the reference object at the same site. ...
Data Warehousing: A Practical Managerial Approach
... something as simple as a spreadsheet or as complicated as Microsoft’s SQL Server® or Oracle®. One example of a database might be the tables used by Human Resources (HR), such as a personnel table listing employee id, first name, last name, department, job, home address information, and so on, in a c ...
... something as simple as a spreadsheet or as complicated as Microsoft’s SQL Server® or Oracle®. One example of a database might be the tables used by Human Resources (HR), such as a personnel table listing employee id, first name, last name, department, job, home address information, and so on, in a c ...
Introduction - SRI Artificial Intelligence Center
... III.2-1. The software architecture will enable us to deploy Whois infrastructure to any number of additional JVTeam data centers. As the registry grows, we will deploy additional Whois infrastructure as appropriate to increase geographic dispersion, enhance the level of service in particularly geogr ...
... III.2-1. The software architecture will enable us to deploy Whois infrastructure to any number of additional JVTeam data centers. As the registry grows, we will deploy additional Whois infrastructure as appropriate to increase geographic dispersion, enhance the level of service in particularly geogr ...
slides
... • Chain commits the transaction (makes it durable) and starts a new transaction, but does not release locks – Individual transactions do not have to be consistent – Recovery is complicated (as before); rollforward required – No performance gain ...
... • Chain commits the transaction (makes it durable) and starts a new transaction, but does not release locks – Individual transactions do not have to be consistent – Recovery is complicated (as before); rollforward required – No performance gain ...
Beyond relational databases Matthew J. Graham CACR Methods of Computational Science
... denormalized databases Normalization means lots of joins when performing queries Adding redundant data or grouping data will improve reads Denormalisation imposes heavy write cost with consistencies Various techniques to handle this: -- Materialized views -- Store writes in memory, sort and process ...
... denormalized databases Normalization means lots of joins when performing queries Adding redundant data or grouping data will improve reads Denormalisation imposes heavy write cost with consistencies Various techniques to handle this: -- Materialized views -- Store writes in memory, sort and process ...
The Unconstrained Primary Key
... These are the constraints that you can define on DB2 for i. Using my housing database example from the keys to the kingdom, I like to think of these as the plumbing and wiring of a house. Get this wrong and you can end up paying through the nose for a long time to come. A good database design practi ...
... These are the constraints that you can define on DB2 for i. Using my housing database example from the keys to the kingdom, I like to think of these as the plumbing and wiring of a house. Get this wrong and you can end up paying through the nose for a long time to come. A good database design practi ...
W-7 OMT-II
... The new records are added at the end of the table. We can insert one row or various rows at the same time, normally getting the data from another table, and so an append query has a source (the table or tables where it gets the data from) and a destiny (the table where we will insert the data). The ...
... The new records are added at the end of the table. We can insert one row or various rows at the same time, normally getting the data from another table, and so an append query has a source (the table or tables where it gets the data from) and a destiny (the table where we will insert the data). The ...
Navitaire-SQL2005 - Platform Modernization Alliance
... This basic architecture can be deployed separately for each customer to give each airline its own reservation and reporting system. The tiers for each customer are deployed on Intel-based 8-CPU 64-bit database servers, typically with eight dualcore, hyperthreaded processors and 32 gigabytes (GB) of ...
... This basic architecture can be deployed separately for each customer to give each airline its own reservation and reporting system. The tiers for each customer are deployed on Intel-based 8-CPU 64-bit database servers, typically with eight dualcore, hyperthreaded processors and 32 gigabytes (GB) of ...
Outline Query Processing Steps Query Processing
... For each query, different physical operators can be combined into different, semantically equivalent QEPs Every physical operator comes with an algorithm Commonly used techniques for many of these algorithms: ...
... For each query, different physical operators can be combined into different, semantically equivalent QEPs Every physical operator comes with an algorithm Commonly used techniques for many of these algorithms: ...
AdvancedSQL - My FIT (my.fit.edu)
... Executed by calling them by name, on the command-line or from a program. Permit external applications to operate on the database without knowing about internal details about the database or even SQL. A standard that is not uncommon – put all queries in stored procedures; applications are then ...
... Executed by calling them by name, on the command-line or from a program. Permit external applications to operate on the database without knowing about internal details about the database or even SQL. A standard that is not uncommon – put all queries in stored procedures; applications are then ...
Highly Available Transactions: Virtues and
... (Section 3). While weak isolation levels do not provide serializability for general-purpose transactions, they are apparently strong enough to deliver acceptable behavior to many application programmers and are substantially stronger than the semantics provided by current highly available systems. T ...
... (Section 3). While weak isolation levels do not provide serializability for general-purpose transactions, they are apparently strong enough to deliver acceptable behavior to many application programmers and are substantially stronger than the semantics provided by current highly available systems. T ...
Presenter
... In a many-to-many relationship, a record in Table A can have many matching records in Table B, and a record in Table B can have many matching records in Table A This type of relationship is only possible by defining a third table (called a junction table) whose primary key consists of two fields — t ...
... In a many-to-many relationship, a record in Table A can have many matching records in Table B, and a record in Table B can have many matching records in Table A This type of relationship is only possible by defining a third table (called a junction table) whose primary key consists of two fields — t ...
4. Createa Small Database using MS SQL Server Management Studio
... MS SQL Server provides for clustered and non-clustered indexes. A clustered index defines the sequence in which the rows of the table are stored. Thus each table can contain only one clustered index, and many (over 200) non-clustered indexes. A database can be VERY FAST or VERY SLOW, depending on wh ...
... MS SQL Server provides for clustered and non-clustered indexes. A clustered index defines the sequence in which the rows of the table are stored. Thus each table can contain only one clustered index, and many (over 200) non-clustered indexes. A database can be VERY FAST or VERY SLOW, depending on wh ...
ResultSet
... 25.3 Relational Database Overview: The books Database • Sample books database – Four tables • authors – authorID, firstName, lastName • titles – isbn, title, editionNumber, copyright, publisherID, imageFile, price • authorISBN – authorID, isbn ...
... 25.3 Relational Database Overview: The books Database • Sample books database – Four tables • authors – authorID, firstName, lastName • titles – isbn, title, editionNumber, copyright, publisherID, imageFile, price • authorISBN – authorID, isbn ...
tia9e_ch11_ppt
... All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher. Printed in the United States of Americ ...
... All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher. Printed in the United States of Americ ...
database
... • access to database---password • access to specific data---second password • deny access to specific data • update process allowed only by a designated person from a specific terminal during certain time • using medium such as magnetic card ©1999 Addison Wesley Longman ...
... • access to database---password • access to specific data---second password • deny access to specific data • update process allowed only by a designated person from a specific terminal during certain time • using medium such as magnetic card ©1999 Addison Wesley Longman ...
PG West Thinking Persons Guide to Data Warehouse Design
... • The two biggest killers of load performance are (1) very wide tables for row-based tables; (2) many indexes on a table / foreign keys; • Column-based tables typically load faster than row-based tables with load utilities, however they will experience slower insert/delete rates than rowbased tables ...
... • The two biggest killers of load performance are (1) very wide tables for row-based tables; (2) many indexes on a table / foreign keys; • Column-based tables typically load faster than row-based tables with load utilities, however they will experience slower insert/delete rates than rowbased tables ...
Quiz - mminfotek.com
... Server, MySQL, Oracle, Sybase etc, you can manage all your information from a single database file. Within the file, divide your data into separate storage containers called tables. You may and retrieve the data using queries. A table is a collection of data about a specific topic, such as products ...
... Server, MySQL, Oracle, Sybase etc, you can manage all your information from a single database file. Within the file, divide your data into separate storage containers called tables. You may and retrieve the data using queries. A table is a collection of data about a specific topic, such as products ...
Chapter 23: Advanced Data Types and New Applications
... Current video-on-demand servers are based on file systems; existing ...
... Current video-on-demand servers are based on file systems; existing ...