Data Definition Language (DDL)
... – E.g. find the name of the customer with customer-id 192-83-7465 select customer.customer-name from customer where customer.customer-id = ‘192-83-7465’ – E.g. find the balances of all accounts held by the customer with customer-id 192-83-7465 select account.balance from depositor, account where dep ...
... – E.g. find the name of the customer with customer-id 192-83-7465 select customer.customer-name from customer where customer.customer-id = ‘192-83-7465’ – E.g. find the balances of all accounts held by the customer with customer-id 192-83-7465 select account.balance from depositor, account where dep ...
Relational Model
... • Candidate Key – any attribute or combination of attributes that can uniquely identify each row • Primary Key - A candidate key which has been chosen by the database designer to uniquely identify each • Surrogate Key - A primary key whose values are automatically generated by the DBMS • Secondary K ...
... • Candidate Key – any attribute or combination of attributes that can uniquely identify each row • Primary Key - A candidate key which has been chosen by the database designer to uniquely identify each • Surrogate Key - A primary key whose values are automatically generated by the DBMS • Secondary K ...
NetSEC: metrology based-application for network security
... Traffic type, I/O traffic load per host or ...
... Traffic type, I/O traffic load per host or ...
Slides
... • Databases are empowered by a body of knowledge and technology embodied in specialized software called a database management system, or DBMS. • A DBMS is a powerful tool for creating and managing large amounts of data efficiently and allowing it to persist over long periods of time, safely. • Among ...
... • Databases are empowered by a body of knowledge and technology embodied in specialized software called a database management system, or DBMS. • A DBMS is a powerful tool for creating and managing large amounts of data efficiently and allowing it to persist over long periods of time, safely. • Among ...
Three Phases of DB Design
... From the earliest days of computers, storing and manipulating data have been a major application focus. The first general-purpose DBMS was designed by Charles Bachman at General Electric in the early 1960s and was called the Integrated Data Store. It formed the basis for the network data model. Bach ...
... From the earliest days of computers, storing and manipulating data have been a major application focus. The first general-purpose DBMS was designed by Charles Bachman at General Electric in the early 1960s and was called the Integrated Data Store. It formed the basis for the network data model. Bach ...
Databases and Users
... Database is designed and implemented and is being maintained to serve their information ...
... Database is designed and implemented and is being maintained to serve their information ...
CHAPTER 1 INTRODUCTION TO DATABASES
... Taking out insurance Using the Internet Studying at university ...
... Taking out insurance Using the Internet Studying at university ...
Database (PowerPoint)
... Databases are BIG! E.g. a new Government database is called COINs: it's 120Gb Recently I've read the following about databases: “many of today's databases routinely grow into the 100-800 gigabyte (GB) range.” “databases of 400 GB or more are not uncommon” “Wal-Mart:- in 2004: at more than 500 ...
... Databases are BIG! E.g. a new Government database is called COINs: it's 120Gb Recently I've read the following about databases: “many of today's databases routinely grow into the 100-800 gigabyte (GB) range.” “databases of 400 GB or more are not uncommon” “Wal-Mart:- in 2004: at more than 500 ...
Databases CS – 341
... practical applications and design issues. Starting from the conceptual modeling stage, through its logical design, the relational model is discussed in detail due to its wide spread base during the last two decades. Relational operations and Structured Query Language are also practiced. An integral ...
... practical applications and design issues. Starting from the conceptual modeling stage, through its logical design, the relational model is discussed in detail due to its wide spread base during the last two decades. Relational operations and Structured Query Language are also practiced. An integral ...
Lecture16_Databases
... For each row in one table, locate a row (or rows) in the other table with the same value(s) in the common field(s) – If found, combine the two; if not, look up the next row ...
... For each row in one table, locate a row (or rows) in the other table with the same value(s) in the common field(s) – If found, combine the two; if not, look up the next row ...
relational database management system
... To maintain data at the conceptual level To transform a valid, complete model to a relational design To design an optimal database To reuse data definitions or relational designs. ...
... To maintain data at the conceptual level To transform a valid, complete model to a relational design To design an optimal database To reuse data definitions or relational designs. ...
Business Intelligence
... data quickly. Dimension Each cube has one or more dimensions, each based on one or more dimension tables. A dimension represents a category for analyzing business data Fact table A fact table contains the basic information that you wish to summarize. This might be order detail information, payroll r ...
... data quickly. Dimension Each cube has one or more dimensions, each based on one or more dimension tables. A dimension represents a category for analyzing business data Fact table A fact table contains the basic information that you wish to summarize. This might be order detail information, payroll r ...
PPT Visuals Template
... 1. Which Access feature for managing tables is the most useful to you? 2. What are the instances when you will need to sort or filter records? ...
... 1. Which Access feature for managing tables is the most useful to you? 2. What are the instances when you will need to sort or filter records? ...
SSAS as data source
... This document is confidential and proprietary of Denodo Technologies. No part of this document may be reproduced in any form by any means without prior written authorization of Denodo Technologies. ...
... This document is confidential and proprietary of Denodo Technologies. No part of this document may be reproduced in any form by any means without prior written authorization of Denodo Technologies. ...
Programming Games in Visual Basic: Data base
... Visual Basic / database • Recordset is set (sequence) of records! • Implicit notion of the current record. This can be changed – movefirst – movenext – moveprev ...
... Visual Basic / database • Recordset is set (sequence) of records! • Implicit notion of the current record. This can be changed – movefirst – movenext – moveprev ...
the Working with Tables 1 document
... separately and links them using the feature ID. Before any analysis can be performed , you must synchronize the two datasets • Object oriented data model combines the spatial and attribute data in a single database. Here each map feature has a unique object ID and an attribute to store its geometry. ...
... separately and links them using the feature ID. Before any analysis can be performed , you must synchronize the two datasets • Object oriented data model combines the spatial and attribute data in a single database. Here each map feature has a unique object ID and an attribute to store its geometry. ...
Access Seminar at DMA
... Merge the Data? • In addition to Reports you can use Word to Tailor Documents created from your data. • Merged Documents! • Try this one • Databases are truly powerful when the Data is used…Well. • Merging data with documents gives you ...
... Merge the Data? • In addition to Reports you can use Word to Tailor Documents created from your data. • Merged Documents! • Try this one • Databases are truly powerful when the Data is used…Well. • Merging data with documents gives you ...
CS 561 Database Management Systems Syllabus
... CS 561 Database Management Systems Syllabus The syllabus below describes a recent offering of the course, but it may not be completely up to date. For current details about this course, please contact the course coordinator. Course coordinators are listed on the course listing for undergraduate cour ...
... CS 561 Database Management Systems Syllabus The syllabus below describes a recent offering of the course, but it may not be completely up to date. For current details about this course, please contact the course coordinator. Course coordinators are listed on the course listing for undergraduate cour ...
The CUAHSI Observations Data Model
... services – Standardization of investigator data management in environmental observatories ...
... services – Standardization of investigator data management in environmental observatories ...
Chapter 8
... All of the queries up until this point have been useful with the exception of one major limitation - that is, you've been selecting from only one table at a time with your SELECT statement. Joins allow you to link data from two or more tables together into a single query result - from one single SEL ...
... All of the queries up until this point have been useful with the exception of one major limitation - that is, you've been selecting from only one table at a time with your SELECT statement. Joins allow you to link data from two or more tables together into a single query result - from one single SEL ...
Slides
... If we want to store data, we could use regular files But databases have many advantages: ...
... If we want to store data, we could use regular files But databases have many advantages: ...
Distributed Database and Replication
... • A DataSet object can hold several tables and relationships between tables. • A DataSet is a set of disconnedted data. Data is extracted from the database and stored in the DataSet object. Updates to the DataSet must copy back to the database to make the changes ...
... • A DataSet object can hold several tables and relationships between tables. • A DataSet is a set of disconnedted data. Data is extracted from the database and stored in the DataSet object. Updates to the DataSet must copy back to the database to make the changes ...
(PPTX, Unknown)
... A (Relational) Database Management System is a type of software which is used to manage databases. It does this with various searching algorithms and a system of transactions which can be utilised by the user to modify and maintain databases. Microsoft Access and MySQL are examples of DBMS’s. The co ...
... A (Relational) Database Management System is a type of software which is used to manage databases. It does this with various searching algorithms and a system of transactions which can be utilised by the user to modify and maintain databases. Microsoft Access and MySQL are examples of DBMS’s. The co ...
I. Terminology
... Eliminates the distinction of parent and child records. A parent can have many children and a child can have many parents. Can model 1:1 (one-to-one), 1:* (one-to-many), and *:* (many-to-many) relationships. Must know the physical structure of the data in order to access it. ...
... Eliminates the distinction of parent and child records. A parent can have many children and a child can have many parents. Can model 1:1 (one-to-one), 1:* (one-to-many), and *:* (many-to-many) relationships. Must know the physical structure of the data in order to access it. ...