Chapter 12
... database (RDBMS), which is a collection of data stored in tables The relational database schema is developed based on the domain model class diagram Each class is represented as a table. One to many associations are represented by adding foreign keys Database design is usually performed in an early ...
... database (RDBMS), which is a collection of data stored in tables The relational database schema is developed based on the domain model class diagram Each class is represented as a table. One to many associations are represented by adding foreign keys Database design is usually performed in an early ...
Extraction and Visualization of Geospatial data from Spatial Database
... to process spatial data types. These are typically called ...
... to process spatial data types. These are typically called ...
Chapter 1: Introduction
... •Foreign key constraint: Value in one relation must appear in another •Referencing relation: e.g., instructor •Referenced relation: e.g., department Will discuss this again in Chapter 3 and Chapter 4. ...
... •Foreign key constraint: Value in one relation must appear in another •Referencing relation: e.g., instructor •Referenced relation: e.g., department Will discuss this again in Chapter 3 and Chapter 4. ...
Creating Tables
... • To ensure a field cannot contain a NULL value you need to define it as NOT NULL when you create the table • NULL values are appropriate when a field may not contain data for some records – for example, in the Customer table there are two fields for the address but some customers only have one addr ...
... • To ensure a field cannot contain a NULL value you need to define it as NOT NULL when you create the table • NULL values are appropriate when a field may not contain data for some records – for example, in the Customer table there are two fields for the address but some customers only have one addr ...
Lecture 1 - Salim Arfaoui
... keep track of data over time. Whether it is a business that wants to keep a record of its customers and its inventory or a non-profit agency that wants to keep track of donors and donations, storing and retrieving that information efficiently requires a database. Information and data: A distinct ...
... keep track of data over time. Whether it is a business that wants to keep a record of its customers and its inventory or a non-profit agency that wants to keep track of donors and donations, storing and retrieving that information efficiently requires a database. Information and data: A distinct ...
Troubleshooting and Optimizing Database Servers Using Microsoft
... The purpose of this two-day workshop is to teach database administrators working in enterprise environments how to determine and troubleshoot performance issues using Microsoft SQL Server 2005. The primary focus of this workshop is to teach the overall process of troubleshooting. It includes establi ...
... The purpose of this two-day workshop is to teach database administrators working in enterprise environments how to determine and troubleshoot performance issues using Microsoft SQL Server 2005. The primary focus of this workshop is to teach the overall process of troubleshooting. It includes establi ...
Information-level design method
... – Careful planning in early phases of the process usually rules out need to consider fourth normal form ...
... – Careful planning in early phases of the process usually rules out need to consider fourth normal form ...
What is a Transaction?
... Data. Historical data are those data that are archived over a long period of time. • Online Analytical Processing Server (OLAP) is based on the multidimensional data model. It allows managers, and analysts to get an insight of the information through fast, consistent, and interactive access to infor ...
... Data. Historical data are those data that are archived over a long period of time. • Online Analytical Processing Server (OLAP) is based on the multidimensional data model. It allows managers, and analysts to get an insight of the information through fast, consistent, and interactive access to infor ...
Object Relational Databases - West University of Timișoara
... Example: an object can be in the students and teachers subtables simultaneously, without having to be in a subtable student_teachers that is under both students and teachers Object can gain/ lose roles: corresponds to inserting /deleting object from a subtable. 2’’. Table inheritance: Consistency Re ...
... Example: an object can be in the students and teachers subtables simultaneously, without having to be in a subtable student_teachers that is under both students and teachers Object can gain/ lose roles: corresponds to inserting /deleting object from a subtable. 2’’. Table inheritance: Consistency Re ...
Introduction to Relational Database Management Systems
... The customer number in the Sales table is called a "foreign key". A foreign key is a copy of a primary key that appears elsewhere. Question: What kinds of fields make good primary keys? Answer: One type of field that makes an excellent primary key is a "counter" field. This is a field with a whole n ...
... The customer number in the Sales table is called a "foreign key". A foreign key is a copy of a primary key that appears elsewhere. Question: What kinds of fields make good primary keys? Answer: One type of field that makes an excellent primary key is a "counter" field. This is a field with a whole n ...
CS405G: Introduction to Database Systems
... • Compute GROUP BY: group rows according to the values of GROUP BY columns • Compute SELECT for each group – For aggregation functions with DISTINCT inputs, first eliminate duplicates within the group Number of groups = number of rows in the final output ...
... • Compute GROUP BY: group rows according to the values of GROUP BY columns • Compute SELECT for each group – For aggregation functions with DISTINCT inputs, first eliminate duplicates within the group Number of groups = number of rows in the final output ...
Using SAS/ACCESS-OLE DB for Pharmacoeconomic Analysis
... hoc or an ongoing basis involving several data sources in disparate file formats. At a Pharmacy Benefit Management company, pharmacy claims number in the millions and are often stored in a dynamic relational database (e.g. Oracle) and are ubiquitous in outcomes analyses. An effective time saving app ...
... hoc or an ongoing basis involving several data sources in disparate file formats. At a Pharmacy Benefit Management company, pharmacy claims number in the millions and are often stored in a dynamic relational database (e.g. Oracle) and are ubiquitous in outcomes analyses. An effective time saving app ...
Logic Databases (Knowledge Bases)
... (Actually, this definition of inconsistency is not as self-evident as it might appear. For nonmonotonic consequence relations, this notion of consistency does not work well and has to be adjusted. I will defer further discussion until we look at properties of non-monotonic consequence relations late ...
... (Actually, this definition of inconsistency is not as self-evident as it might appear. For nonmonotonic consequence relations, this notion of consistency does not work well and has to be adjusted. I will defer further discussion until we look at properties of non-monotonic consequence relations late ...
Chapter 17 - SaigonTech
... executeBatch. Executes a group of commands as a unit, returning an array with the update counts for each command setQueryTimeout. Specifies the amount of time a driver waits for the result before throwing an SQLException. getMaxRows/setMaxRows. etermines the number of rows a ResultSet may contain ...
... executeBatch. Executes a group of commands as a unit, returning an array with the update counts for each command setQueryTimeout. Specifies the amount of time a driver waits for the result before throwing an SQLException. getMaxRows/setMaxRows. etermines the number of rows a ResultSet may contain ...
SABIO-RK: A data warehouse for biochemical reactions and their
... systematic and semi-systematic names, class terms, and also otherwise underspecified names, by using a morpho-syntactic grammar developed in accordance with IUPAC nomenclature. It yields an intermediate semantic representation of a compound, which describes the information encoded in a name. The too ...
... systematic and semi-systematic names, class terms, and also otherwise underspecified names, by using a morpho-syntactic grammar developed in accordance with IUPAC nomenclature. It yields an intermediate semantic representation of a compound, which describes the information encoded in a name. The too ...
Handy Annotations within Oracle 10g
... Relational database query languages, like SQL, have played an essential role in the development of relational database systems [2]. a) Relational Database The relational model is today the primary data model for commercial at processing applications. It attained its primary position because of its s ...
... Relational database query languages, like SQL, have played an essential role in the development of relational database systems [2]. a) Relational Database The relational model is today the primary data model for commercial at processing applications. It attained its primary position because of its s ...
Lecture 1
... In the 1980s, the relational model consolidated its position as the dominant DBMS paradigm, and database systems continued to gain widespread use. The SQL query language for relational databases, developed as part of IBM's System R project, is now the standard query language. SQL was standardized in ...
... In the 1980s, the relational model consolidated its position as the dominant DBMS paradigm, and database systems continued to gain widespread use. The SQL query language for relational databases, developed as part of IBM's System R project, is now the standard query language. SQL was standardized in ...
Document
... • Compare optimistic and pessimistic concurrency control • Describe problems and techniques for data security • Understand role of databases in Sarbanes-Oxley compliance • Describe problems and facilities for data recovery • Describe database tuning issues and list areas where changes can be done to ...
... • Compare optimistic and pessimistic concurrency control • Describe problems and techniques for data security • Understand role of databases in Sarbanes-Oxley compliance • Describe problems and facilities for data recovery • Describe database tuning issues and list areas where changes can be done to ...
Failproof Webservices using webMethods Fabric(gaia)
... Failproof Webservices using webMethods Fabric(gaia) Kalyan Bemalkhedkar, Ravikanth Burra, Vern DeHaven and Sudhindra Rao ...
... Failproof Webservices using webMethods Fabric(gaia) Kalyan Bemalkhedkar, Ravikanth Burra, Vern DeHaven and Sudhindra Rao ...
