9780538469685_PPT_ch01
... In this chapter, you will learn: • The difference between data and information • What a database is, the various types of databases, and why they are valuable assets for decision making • The importance of database design • How modern databases evolved from file systems Database Systems, 9th Edition ...
... In this chapter, you will learn: • The difference between data and information • What a database is, the various types of databases, and why they are valuable assets for decision making • The importance of database design • How modern databases evolved from file systems Database Systems, 9th Edition ...
Lecture 1 - cda college
... Evolution of File System Data Processing (cont'd.) • Initially, computer file systems resembled manual systems • As number of files increased, file systems evolved – Each file used its own application program to store, retrieve, and modify data – Each file was owned by individual or department that ...
... Evolution of File System Data Processing (cont'd.) • Initially, computer file systems resembled manual systems • As number of files increased, file systems evolved – Each file used its own application program to store, retrieve, and modify data – Each file was owned by individual or department that ...
Chapter 1
... Evolution of File System Data Processing (cont'd.) • Initially, computer file systems resembled manual systems • As number of files increased, file systems evolved – Each file used its own application program to store, retrieve, and modify data – Each file was owned by individual or department that ...
... Evolution of File System Data Processing (cont'd.) • Initially, computer file systems resembled manual systems • As number of files increased, file systems evolved – Each file used its own application program to store, retrieve, and modify data – Each file was owned by individual or department that ...
Atlas Now & The Future
... ATLAS Document Center™ support documentation linking and tracking. ATLAS Administrator™ controls all functionality of the Front Office products. “On The Fly” & Custom reporting capabilities. Copper & Fiber cable management. Automated equipment records building system. Digital systems tracking. “Find ...
... ATLAS Document Center™ support documentation linking and tracking. ATLAS Administrator™ controls all functionality of the Front Office products. “On The Fly” & Custom reporting capabilities. Copper & Fiber cable management. Automated equipment records building system. Digital systems tracking. “Find ...
MCITP Administrator: Microsoft SQL Server 2005 Database
... • Combine the name of the table and the names of the columns and frequently include a prefix such as a “IX_” prefix. • Augment the prefix to indicate whether the index is clustered or nonclustered, a unique index, and so ...
... • Combine the name of the table and the names of the columns and frequently include a prefix such as a “IX_” prefix. • Augment the prefix to indicate whether the index is clustered or nonclustered, a unique index, and so ...
Java DataBase Connectivity (JDBC)
... of answers, which can be examined by moving a ‘pointer’ (cursor). ...
... of answers, which can be examined by moving a ‘pointer’ (cursor). ...
Database Systems: Design, Implementation, and Management 11th
... • Attributes describe the properties of an object • Objects that share similar characteristics are grouped in classes • Classes are organized in a class hierarchy • Inheritance: object inherits methods and attributes of parent class • UML based on OO concepts that describe diagrams and symbols – Use ...
... • Attributes describe the properties of an object • Objects that share similar characteristics are grouped in classes • Classes are organized in a class hierarchy • Inheritance: object inherits methods and attributes of parent class • UML based on OO concepts that describe diagrams and symbols – Use ...
Queries and calculations with attribute data
... Relational (Tabular) Database Model A design used in database systems in which relationships are created between one or more flat files or tables based on the idea that each pair of tables has a field in common, or “key”. In a relational database, the records are generally different in each table Th ...
... Relational (Tabular) Database Model A design used in database systems in which relationships are created between one or more flat files or tables based on the idea that each pair of tables has a field in common, or “key”. In a relational database, the records are generally different in each table Th ...
lecture notes
... running the application db2jDB (directory) The directory that makes up the db2jDB database. We must not modify anything in this directory, or we will corrupt the database. The directory was created when the application connected with Cloudscape, using the attribute create=true in the database co ...
... running the application db2jDB (directory) The directory that makes up the db2jDB database. We must not modify anything in this directory, or we will corrupt the database. The directory was created when the application connected with Cloudscape, using the attribute create=true in the database co ...
chap09
... • Most modern databases are relational databases, which store data in a tabular format • Relational databases store data about different entities in separate tables • A primary key is a field that uniquely identifies a specific record in a database table • Personal database systems are best suited f ...
... • Most modern databases are relational databases, which store data in a tabular format • Relational databases store data about different entities in separate tables • A primary key is a field that uniquely identifies a specific record in a database table • Personal database systems are best suited f ...
Surrogate Key
... Stakeholders and Requirements • It is useful to think about requirements in terms of each of the stakeholders who will be using the database. • What does that particular stakeholder need to do with the data in order to do their job? • What are the limits on what each stakeholder should be able to d ...
... Stakeholders and Requirements • It is useful to think about requirements in terms of each of the stakeholders who will be using the database. • What does that particular stakeholder need to do with the data in order to do their job? • What are the limits on what each stakeholder should be able to d ...
marked
... 1. For each data item Q, if transaction Ti reads the initial value of Q in schedule S, then transaction Ti must, in schedule S´, also read the initial value of Q. 2. For each data item Q if transaction Ti executes read(Q) in schedule S, and that value was produced by transaction Tj (if any), then tr ...
... 1. For each data item Q, if transaction Ti reads the initial value of Q in schedule S, then transaction Ti must, in schedule S´, also read the initial value of Q. 2. For each data item Q if transaction Ti executes read(Q) in schedule S, and that value was produced by transaction Tj (if any), then tr ...
transaction
... Isolation : Transactions “unaware” of other concurrent transaction i.e. : Although multiple transactions may execute concurrently, each transaction must be unaware of other concurrently executing transactions. Intermediate transaction results must be hidden from other concurrently executed transacti ...
... Isolation : Transactions “unaware” of other concurrent transaction i.e. : Although multiple transactions may execute concurrently, each transaction must be unaware of other concurrently executing transactions. Intermediate transaction results must be hidden from other concurrently executed transacti ...
Security - Computer Science and Engineering Department
... examines each message and blocks those that do not meet the specified security criteria. There are several types of firewall techniques: Packet filter: which looks at each packet entering or leaving the network and accepts or rejects it based on user-defined rules. Application gateway: which app ...
... examines each message and blocks those that do not meet the specified security criteria. There are several types of firewall techniques: Packet filter: which looks at each packet entering or leaving the network and accepts or rejects it based on user-defined rules. Application gateway: which app ...
Paper
... In the world of data warehouses utilities, great emphasis is placed on the contrasts between one vendor’s performance benchmark and another’s performance benchmark. But, benchmarks no longer tell the whole story. Recovery became among the very important characteristics of any product. Everybody know ...
... In the world of data warehouses utilities, great emphasis is placed on the contrasts between one vendor’s performance benchmark and another’s performance benchmark. But, benchmarks no longer tell the whole story. Recovery became among the very important characteristics of any product. Everybody know ...
goel /Thesis/Presentation - Computer Science & Engineering
... Experiment on AR database using closest match approach + scoring, training set consists of random subjects as in the gallery and Test set contains different combinations. ...
... Experiment on AR database using closest match approach + scoring, training set consists of random subjects as in the gallery and Test set contains different combinations. ...
Relational Databases and SQLite
... • Complexity makes speed possible and allows you to get very fast results as the data size grows • By normalizing the data and linking it with integer keys, the overall amount of data which the relational database must scan is far lower than if the data were simply flattened out • It might seem like ...
... • Complexity makes speed possible and allows you to get very fast results as the data size grows • By normalizing the data and linking it with integer keys, the overall amount of data which the relational database must scan is far lower than if the data were simply flattened out • It might seem like ...
PeopleSoft Database Structure
... Oracle database users: every process that makes a 2-tier connection to the database identifies itself with a PSFT user or operator ID Database user accounts/schemas: ...
... Oracle database users: every process that makes a 2-tier connection to the database identifies itself with a PSFT user or operator ID Database user accounts/schemas: ...
What is a database?
... Immediately, you can see this is not what you want. You want the table sorted alphabetically by last name, not initials. How can you fix this? Well, you could do some complex manipulation using a database feature called 'string functions' – if your program supports such a feature. Or, you could come ...
... Immediately, you can see this is not what you want. You want the table sorted alphabetically by last name, not initials. How can you fix this? Well, you could do some complex manipulation using a database feature called 'string functions' – if your program supports such a feature. Or, you could come ...
Slide 2-1
... perceive data. Such as: entity, attribute, relationship among entities (will explain more detail in ER model) Physical (low-level, internal) data models: Provide concepts that describe details of how data is stored in the computer. Ex. Tree, Graph, dsb Implementation (representational) data mode ...
... perceive data. Such as: entity, attribute, relationship among entities (will explain more detail in ER model) Physical (low-level, internal) data models: Provide concepts that describe details of how data is stored in the computer. Ex. Tree, Graph, dsb Implementation (representational) data mode ...
handout (6 slides per page)
... requires that we find a “good” representation of the information from an application domain (e.g., banking) as a collection of relation schemas.! ...
... requires that we find a “good” representation of the information from an application domain (e.g., banking) as a collection of relation schemas.! ...
Assess real estate database requirements
... international standards for their hardware and software, allowing different devices to exchange information. The ability to connect computers via the Internet allows agents to communicate more effectively with fellow staff, clients and prospects. Portable devices such as laptop computers, tablet com ...
... international standards for their hardware and software, allowing different devices to exchange information. The ability to connect computers via the Internet allows agents to communicate more effectively with fellow staff, clients and prospects. Portable devices such as laptop computers, tablet com ...
The Revised NTP TDMS System
... component in a slightly more dramatic fashion. This is due to the introduction of the databse query into the reporting component. Previously this was a separate and independent process. But now that a new database exists those queries a have to be rewritten. The multi-generational development of the ...
... component in a slightly more dramatic fashion. This is due to the introduction of the databse query into the reporting component. Previously this was a separate and independent process. But now that a new database exists those queries a have to be rewritten. The multi-generational development of the ...