Introduction to Databases
... Examples of Entity Integrity • Data Type Integrity: very common and most basic. Checks only for “data type” compatibility with DB Schema, such as: numeric, character, logical, date format, etc. • Commonly referred to in GIS manuals as: – Range and List domains • Ranges - acceptable Numeric ranges f ...
... Examples of Entity Integrity • Data Type Integrity: very common and most basic. Checks only for “data type” compatibility with DB Schema, such as: numeric, character, logical, date format, etc. • Commonly referred to in GIS manuals as: – Range and List domains • Ranges - acceptable Numeric ranges f ...
Infrastructure
... A set of attributes (FK) of R is a foreign key if the attributes in FK have the same domain as the primary key (PK) attributes of another relation S, and for each instance of R, the values of FK occur as a value of PK for some instance in S, or is null. ...
... A set of attributes (FK) of R is a foreign key if the attributes in FK have the same domain as the primary key (PK) attributes of another relation S, and for each instance of R, the values of FK occur as a value of PK for some instance in S, or is null. ...
Introduction to Database
... An example of database design problem Design a database for a company to keep track of employees, departments and projects. The company is organized into departments. Each department has a unique number, name. Each department controls a number of projects, each of which has a unique number, and nam ...
... An example of database design problem Design a database for a company to keep track of employees, departments and projects. The company is organized into departments. Each department has a unique number, name. Each department controls a number of projects, each of which has a unique number, and nam ...
SE487 outline - current Term
... models: object-oriented model, and object-relational model, conceptual database design. Transaction processing: transactions, failure and recovery, and concurrency control techniques. Database backup and recovery. Query processing and optimization. Database security. Distributed databases: distribut ...
... models: object-oriented model, and object-relational model, conceptual database design. Transaction processing: transactions, failure and recovery, and concurrency control techniques. Database backup and recovery. Query processing and optimization. Database security. Distributed databases: distribut ...
Document
... – In version 1.0, protocol exceptions are not detected until a call to getResultSet – In version 2.0, exceptions are thrown in execute for bad queries as well as I/O errors . ...
... – In version 1.0, protocol exceptions are not detected until a call to getResultSet – In version 2.0, exceptions are thrown in execute for bad queries as well as I/O errors . ...
Database Systems: Design, Implementation, and Management
... internal model for a selected DBMS. It includes the design of tables, indexes, views, transactions Access authorities (who can access what) are also decided. The ER model is translated into relational schema ...
... internal model for a selected DBMS. It includes the design of tables, indexes, views, transactions Access authorities (who can access what) are also decided. The ER model is translated into relational schema ...
Overview of Databases and Transaction Processing
... • Today, many scientific discovery are achieved through the analysis of an ever increasing large amount of scientific data. Example: bioinformatics. • Scientific data management goes beyond the scope of traditional business data management: not only efficient storage and access, but also information ...
... • Today, many scientific discovery are achieved through the analysis of an ever increasing large amount of scientific data. Example: bioinformatics. • Scientific data management goes beyond the scope of traditional business data management: not only efficient storage and access, but also information ...
Relational Databases
... • Different users of the database information are at an external level of the database. These users have logical views of the data. • At an internal level of the database is the physical view of the data which is how the data is actually physically stored in the system. • Designers of a database nee ...
... • Different users of the database information are at an external level of the database. These users have logical views of the data. • At an internal level of the database is the physical view of the data which is how the data is actually physically stored in the system. • Designers of a database nee ...
Lecture Notes
... such as cost of data transmission, costs of synchronizing distributed parts of the database, and the degree to which the entire database must be current at all times. Data Warehouse As we have seen before, there are many types of information systems and databases are a key component of each of these ...
... such as cost of data transmission, costs of synchronizing distributed parts of the database, and the degree to which the entire database must be current at all times. Data Warehouse As we have seen before, there are many types of information systems and databases are a key component of each of these ...
Document
... 2. A department controls a number of projects, each of which has a unique name, a unique number and a single location. 3. We store each employee’s name, Social Security number, address, salary, sex and birth date. An employee is assigned to one department but may work on several projects, which are ...
... 2. A department controls a number of projects, each of which has a unique name, a unique number and a single location. 3. We store each employee’s name, Social Security number, address, salary, sex and birth date. An employee is assigned to one department but may work on several projects, which are ...
CS306_Intro
... 2. A department controls a number of projects, each of which has a unique name, a unique number and a single location. 3. We store each employee’s name, Social Security number, address, salary, sex and birth date. An employee is assigned to one department but may work on several projects, which are ...
... 2. A department controls a number of projects, each of which has a unique name, a unique number and a single location. 3. We store each employee’s name, Social Security number, address, salary, sex and birth date. An employee is assigned to one department but may work on several projects, which are ...
VIEWS_EPA_Data_Summit_200802
... What is VIEWS? The Visibility Information Exchange Web System is a database system and set of online tools originally designed to support the Regional Haze Rule enacted by the EPA to reduce regional haze in national parks and wilderness areas. ...
... What is VIEWS? The Visibility Information Exchange Web System is a database system and set of online tools originally designed to support the Regional Haze Rule enacted by the EPA to reduce regional haze in national parks and wilderness areas. ...
Introduction to Database Systems
... the database itself • This is data about data or ‘metadata’ • Almost every aspect of the DBMS uses the dictionary ...
... the database itself • This is data about data or ‘metadata’ • Almost every aspect of the DBMS uses the dictionary ...
Ch04r
... interface can be found at CNN Interactive. CNN Interactive provides a free, online custom news service to hundreds of thousands of subscribers around the world. … (page 2-109) ...
... interface can be found at CNN Interactive. CNN Interactive provides a free, online custom news service to hundreds of thousands of subscribers around the world. … (page 2-109) ...
Organisation Of Data
... • Record: a collection of all the fields above on one person. • File: a collection of records; a payroll file will contain a record for each person on the payroll. • Database: may contain many different files, structured in such a way that information can be obtained from one or all of them at once. ...
... • Record: a collection of all the fields above on one person. • File: a collection of records; a payroll file will contain a record for each person on the payroll. • Database: may contain many different files, structured in such a way that information can be obtained from one or all of them at once. ...
Introduction to Database
... An example of database design problem Design a database for a company to keep track of employees, departments and projects. The company is organized into departments. Each department has a unique number, name. Each department controls a number of projects, each of which has a unique number, and nam ...
... An example of database design problem Design a database for a company to keep track of employees, departments and projects. The company is organized into departments. Each department has a unique number, name. Each department controls a number of projects, each of which has a unique number, and nam ...
Data Models
... • Database query languages require relationships to be specified between database tables to permit queries which connect data across the database tables • E-R diagrams provide a framework and ‘rules’ for database development www.monash.edu.au ...
... • Database query languages require relationships to be specified between database tables to permit queries which connect data across the database tables • E-R diagrams provide a framework and ‘rules’ for database development www.monash.edu.au ...
slides
... transactions result in a system state that would be obtained if transactions were executed serially, i.e. one after the other ...
... transactions result in a system state that would be obtained if transactions were executed serially, i.e. one after the other ...
Introduction to ASP.NET
... – Multiple SQL statements – Programming languages • Transact-SQL • .NET languages ...
... – Multiple SQL statements – Programming languages • Transact-SQL • .NET languages ...
SQL
... Different SQL Servers • Mysql (open source – no cost to use though may cost to embed and resell outside gpl) • Ms sql (microsoft ) • Oracle • Sybase • Access • Older AS/400 – SQL machine ...
... Different SQL Servers • Mysql (open source – no cost to use though may cost to embed and resell outside gpl) • Ms sql (microsoft ) • Oracle • Sybase • Access • Older AS/400 – SQL machine ...
Getting all of your data into PI
... Getting even farther outside the box • The PI SDK has brought the ability to read/write data to PI from a script. • If you can write a script to read the data, you can write it to PI. ...
... Getting even farther outside the box • The PI SDK has brought the ability to read/write data to PI from a script. • If you can write a script to read the data, you can write it to PI. ...
