DATA INDEPENDENCE AND DATABASE VIEWS
... If the base tables do not change, neither does the view instance • Re-executing view definition each time the view is used is wasteful if base data has not been updated Solution: view materialization • Create a temporary view table when the view is first queried • Keep view table on the assumpti ...
... If the base tables do not change, neither does the view instance • Re-executing view definition each time the view is used is wasteful if base data has not been updated Solution: view materialization • Create a temporary view table when the view is first queried • Keep view table on the assumpti ...
Lecture 1 : Introduction to DBMS
... – Persistent: data outlives programs that operate on it – Multi-user: many people/programs accessing same database, or even same data, simultaneously => Need careful controls SPRING 2004S ...
... – Persistent: data outlives programs that operate on it – Multi-user: many people/programs accessing same database, or even same data, simultaneously => Need careful controls SPRING 2004S ...
mapping
... Relational Model Concepts The relational Model of Data is based on the concept of a Relation. A Relation is a mathematical concept based on the ideas of sets. The strength of the relational approach to data management comes from the formal foundation provided by the theory of relations. ...
... Relational Model Concepts The relational Model of Data is based on the concept of a Relation. A Relation is a mathematical concept based on the ideas of sets. The strength of the relational approach to data management comes from the formal foundation provided by the theory of relations. ...
Database
... customers, parts, orders, and order lines • Entity-relationship (E-R) diagram: represents a ...
... customers, parts, orders, and order lines • Entity-relationship (E-R) diagram: represents a ...
Distributed DBMS Architecture
... • Data is distributed across all the nodes. • Same DBMS at each node. • All data is managed by the distributed DBMS (no exclusively local data.) • All access is through one, global schema. • The global schema is the union of all the ...
... • Data is distributed across all the nodes. • Same DBMS at each node. • All data is managed by the distributed DBMS (no exclusively local data.) • All access is through one, global schema. • The global schema is the union of all the ...
Database-Driven Web Sites
... from http://www.sitepoint.com/article/php-mysql-tutorial SQL Server 2005 Amid DBMS Market Dynamics from http://www.ftponline.com/wss/2004_12/magazine/columns/trends/ Market share analysis from http://www.olapreport.com/Market.htm IBM, Oracle Race for Database Dominance from http://www.eweek.com/arti ...
... from http://www.sitepoint.com/article/php-mysql-tutorial SQL Server 2005 Amid DBMS Market Dynamics from http://www.ftponline.com/wss/2004_12/magazine/columns/trends/ Market share analysis from http://www.olapreport.com/Market.htm IBM, Oracle Race for Database Dominance from http://www.eweek.com/arti ...
Gottfried Thesis First Draft
... performance obsolete and businesses realized the flexibility of a relational model (Vaughn). The Relational Model made sense so long as businesses were keeping track of disconnected or only looselyconnected data, but as businesses evolved and started gathering data that more closely approximates the ...
... performance obsolete and businesses realized the flexibility of a relational model (Vaughn). The Relational Model made sense so long as businesses were keeping track of disconnected or only looselyconnected data, but as businesses evolved and started gathering data that more closely approximates the ...
CPS 216: Advanced Database Systems
... if balance > amount then balance = balance - amount; write balance; $350 if balance > amount then balance = balance - amount; $300 write balance; $300 ...
... if balance > amount then balance = balance - amount; write balance; $350 if balance > amount then balance = balance - amount; $300 write balance; $300 ...
Cubes by design
... defines information such as location of data, cube structure, cube-based security permissions and calculated measure definitions. The navigation files are used to help understand how information of the input data translates to the structure of the cube; for example, how members relate to each other ...
... defines information such as location of data, cube structure, cube-based security permissions and calculated measure definitions. The navigation files are used to help understand how information of the input data translates to the structure of the cube; for example, how members relate to each other ...
Moving the SQL 2005 System Databases A typical installation of
... return the old path of the system files, information we will need to move the files in a later step. But how to get the variable from SQL to the calling batch script? This was enough of a challenge that I considered writing it all as a SQL script using SQLCMD's new parameters, but again, going from ...
... return the old path of the system files, information we will need to move the files in a later step. But how to get the variable from SQL to the calling batch script? This was enough of a challenge that I considered writing it all as a SQL script using SQLCMD's new parameters, but again, going from ...
Database Modeling and Design - Lecture Notes
... whole concept; a simple group is a fixed collection, e.g. date (month, day, year); a repeating group is a variable length collection, e.g. a set of aliases. record—group of related data items treated as a unit by an application program (examples: presidents, elections, congresses) file—collection of ...
... whole concept; a simple group is a fixed collection, e.g. date (month, day, year); a repeating group is a variable length collection, e.g. a set of aliases. record—group of related data items treated as a unit by an application program (examples: presidents, elections, congresses) file—collection of ...
No Slide Title
... information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle’s ...
... information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The development, release, and timing of any features or functionality described for Oracle’s ...
Computers: Understanding Technology, 3e
... – Entity – a person, place, thing, or event – Field – a single value, such as a name, address, or dollar amount • data type: usually numeric or text (numbers and text) • name: assigned by person developing the database • size: number of characters that can be entered ...
... – Entity – a person, place, thing, or event – Field – a single value, such as a name, address, or dollar amount • data type: usually numeric or text (numbers and text) • name: assigned by person developing the database • size: number of characters that can be entered ...
Document
... – large volumes of transaction data are collected and stored for later analysis. – multimedia objects like images are increasingly stored in databases • Large-scale parallel database systems increasingly used for: – storing large volumes of data – processing time-consuming decision-support queries – ...
... – large volumes of transaction data are collected and stored for later analysis. – multimedia objects like images are increasingly stored in databases • Large-scale parallel database systems increasingly used for: – storing large volumes of data – processing time-consuming decision-support queries – ...
lecture07
... • The way in which data is stored is very important for subsequent access and manipulation by SQL. • Properties of a good data model: – It is easy to write correct and easy to understand queries. – Minor changes in the problem domain do not change the schema. – Major changes in the problem domain ca ...
... • The way in which data is stored is very important for subsequent access and manipulation by SQL. • Properties of a good data model: – It is easy to write correct and easy to understand queries. – Minor changes in the problem domain do not change the schema. – Major changes in the problem domain ca ...
Introduction to Physical Database Design
... improve their table indexing design. Impressive as this is, what is equally astounding are claims about improving the performance of problem queries by as much as 50 times. Physical database design is really motivated by data volume. After all, a database with a few rows of data really has no issues ...
... improve their table indexing design. Impressive as this is, what is equally astounding are claims about improving the performance of problem queries by as much as 50 times. Physical database design is really motivated by data volume. After all, a database with a few rows of data really has no issues ...
Comparisons of Relational Databases with Big Data
... considered as its greatest weakness because there are not many defined standards for NoSQL databases; so, no two NoSQL databases are equal. 2. No stored procedures in Mongodb (NoSql database). 3. GUI mode tools to access the database is not flexibly available in market. 4. It is so difficult to find ...
... considered as its greatest weakness because there are not many defined standards for NoSQL databases; so, no two NoSQL databases are equal. 2. No stored procedures in Mongodb (NoSql database). 3. GUI mode tools to access the database is not flexibly available in market. 4. It is so difficult to find ...
Data Modeling - Temple Fox MIS
... FirstName VARCHAR(45) NULL , LastName VARCHAR(45) NULL , City VARCHAR(45) NULL , State VARCHAR(2) NULL , Zip VARCHAR(10) NULL , ...
... FirstName VARCHAR(45) NULL , LastName VARCHAR(45) NULL , City VARCHAR(45) NULL , State VARCHAR(2) NULL , Zip VARCHAR(10) NULL , ...
Let SAS Generate XML Code for ACCESS Audit Trail Data Macro
... comments embedded in the code above tell what information is saved into the audit trail table. For example, “%block(S1)” will generate all the XML code between start and end tags shown in “DataMacro_template.xml" above. If this
block of code is triggered in the table macro when an ...
... comments embedded in the code above tell what information is saved into the audit trail table. For example, “%block(S1)” will generate all the XML code between
Budapest_IDN-Report_Tromso - wgiss
... with Oracle 8i and the LDA package was also configured. / LDA won’t be a part of the installAnywhere package in the future. The final module is working with the following third-party packages. ...
... with Oracle 8i and the LDA package was also configured. / LDA won’t be a part of the installAnywhere package in the future. The final module is working with the following third-party packages. ...
MicroStrategy Connectivity
... DSNs listed will list local machine DSNs and all other DSNs recorded in Metadata. In a 3 tier environment, DSN may or may not actually be a DSN on a local machine. There’s unlimited number of Database Logins that can be created, this functionality is needed for advanced administration and monitoring ...
... DSNs listed will list local machine DSNs and all other DSNs recorded in Metadata. In a 3 tier environment, DSN may or may not actually be a DSN on a local machine. There’s unlimited number of Database Logins that can be created, this functionality is needed for advanced administration and monitoring ...
IT DATABASE MANAGEMENT - Housing Internal Audit Forum
... Internal Audit Programme Guide January 2007 ...
... Internal Audit Programme Guide January 2007 ...
Database Systems - a.thanop somprasong
... What the various types of databases are Why they are valuable assets for decision making The importance of database design How modern databases evolved from file systems About flaws in file system data management What the database system’s main components are How a database system differs from a fil ...
... What the various types of databases are Why they are valuable assets for decision making The importance of database design How modern databases evolved from file systems About flaws in file system data management What the database system’s main components are How a database system differs from a fil ...