764_10_Tut+Talk
... John McCarthy David Parnas Patti Maes (MIT) others Design Fest: teams attack at problem using different methods http://designfest.acm.org/ ...
... John McCarthy David Parnas Patti Maes (MIT) others Design Fest: teams attack at problem using different methods http://designfest.acm.org/ ...
... ……an issue of lobola is quite interesting and easily understandable. We hear about lobola daily and after all it is our culture therefore I should precisely understand it …I understand the whole question and I can interpret it …it is traditional for men to pay a lobola for the wife when he wants to ...
Slides for Ch-13
... Correspondingly, a relational-algebra expression can be evaluated in many ways. ...
... Correspondingly, a relational-algebra expression can be evaluated in many ways. ...
Heterogeneous Distributed Database Management: The HD-DBMS
... X, while anotherset of users, at nodeswhere IMS databases reside, could have accessto any databaseas if it were managed by IMS. Ideally, a user anywhere could look at any database through his favoriteDBMS, whether or notit was the preferred one at his site. Therewill be,ofcourse,manyuserswhowillconf ...
... X, while anotherset of users, at nodeswhere IMS databases reside, could have accessto any databaseas if it were managed by IMS. Ideally, a user anywhere could look at any database through his favoriteDBMS, whether or notit was the preferred one at his site. Therewill be,ofcourse,manyuserswhowillconf ...
original - Kansas State University
... E.g. account, customer, depositor relations Each with a string-valued attribute to store the element ...
... E.g. account, customer, depositor relations Each with a string-valued attribute to store the element ...
Entity Sets
... and a set of medical doctors. Associate with each patient a log of various tests and examinations conducted. ...
... and a set of medical doctors. Associate with each patient a log of various tests and examinations conducted. ...
Controlling image size when using GemStone
... In general, objects are retrieved from a database to interact in the client. In most cases, these objects can only answer messages when replicated in the client image. However, in GemStone, database objects can respond to messages without being replicated in the image. This removes the requirement f ...
... In general, objects are retrieved from a database to interact in the client. In most cases, these objects can only answer messages when replicated in the client image. However, in GemStone, database objects can respond to messages without being replicated in the image. This removes the requirement f ...
Chapter 4
... basis for “real” languages (e.g. SQL), and for implementation: Relational Algebra: More operational, very useful for representing execution plans. Relational Calculus: Lets users describe what they want, rather than how to compute it. (Non-operational, declarative.) Understanding Algebra & Cal ...
... basis for “real” languages (e.g. SQL), and for implementation: Relational Algebra: More operational, very useful for representing execution plans. Relational Calculus: Lets users describe what they want, rather than how to compute it. (Non-operational, declarative.) Understanding Algebra & Cal ...
white paper a comparison between relational and
... each item appears as a row. Relationships among the data are expressed by comparing the values stored in these tables. Languages like SQL allow tables to be combined on the fly to express relationships among the data. The object model is based on the tight integration of code and data, flexible data ...
... each item appears as a row. Relationships among the data are expressed by comparing the values stored in these tables. Languages like SQL allow tables to be combined on the fly to express relationships among the data. The object model is based on the tight integration of code and data, flexible data ...
chap16
... part of the same database – Need to understand the concept of the primary key when you normalize a database Programming Logic and Design, Third Edition Comprehensive ...
... part of the same database – Need to understand the concept of the primary key when you normalize a database Programming Logic and Design, Third Edition Comprehensive ...
SAGE and Its Application to Inter
... We chose inter-company EC to try SAGE out for rst, rather than consumer EC and other application areas because of the following reasons. The rst reason is that enterprises can use resources to have useful systems. The second reason is that a limited environment of inter-company EC makes rst deplo ...
... We chose inter-company EC to try SAGE out for rst, rather than consumer EC and other application areas because of the following reasons. The rst reason is that enterprises can use resources to have useful systems. The second reason is that a limited environment of inter-company EC makes rst deplo ...
l1 - CLAIR
... • Assignment 2: Database design using ERWin and Oracle • Assignment 3: Database design using MySQL • Assignment 4: XML, Data Mining, and other advanced topics ...
... • Assignment 2: Database design using ERWin and Oracle • Assignment 3: Database design using MySQL • Assignment 4: XML, Data Mining, and other advanced topics ...
Document
... • Assignment 2: Database design using ERWin and Oracle • Assignment 3: Database design using MySQL • Assignment 4: XML, Data Mining, and other advanced topics ...
... • Assignment 2: Database design using ERWin and Oracle • Assignment 3: Database design using MySQL • Assignment 4: XML, Data Mining, and other advanced topics ...
Physical Database Design and Performance (Significant Concepts)
... development process when systems analysts are studying current and proposed data processing and business activities. The Data Volume Statistics represent size of the business and should be calculated assuming business growth over at least a several year period. The Access Frequencies are estimated f ...
... development process when systems analysts are studying current and proposed data processing and business activities. The Data Volume Statistics represent size of the business and should be calculated assuming business growth over at least a several year period. The Access Frequencies are estimated f ...
Here - NYU Computer Science Department
... one another but separately from the E# values. This is a great idea for very wide tables (100s of ...
... one another but separately from the E# values. This is a great idea for very wide tables (100s of ...
mod-7 - Avi Silberschatz
... Run external language functions/procedures in a separate process, with no access to the database process’ memory. ...
... Run external language functions/procedures in a separate process, with no access to the database process’ memory. ...
Database Engineering from the Category Theory - CEUR
... formalisms and languages useful for database designing, and in general, useful for database application development. There are several conferences around database engineering topics. Clear definition of what is database engineering does not exist. What we mean under database engineering is specializ ...
... formalisms and languages useful for database designing, and in general, useful for database application development. There are several conferences around database engineering topics. Clear definition of what is database engineering does not exist. What we mean under database engineering is specializ ...
(A) R
... Suppose that students are given roll numbers which are strings of the form CS0012 or EE1127 If the first two characters are extracted to find the department, the domain of roll numbers is not atomic. Doing so is a bad idea: leads to encoding of information in application program rather than in ...
... Suppose that students are given roll numbers which are strings of the form CS0012 or EE1127 If the first two characters are extracted to find the department, the domain of roll numbers is not atomic. Doing so is a bad idea: leads to encoding of information in application program rather than in ...
MySQL
... from outside the University campus. We provide MySQL accounts for student projects on request. To access a MySQL account you will need a pre-assigned database name, username and a password. Please use the Computer Science Helpdesk at http://www.cs.qub.ac.uk/helpdesk to request accounts and provide y ...
... from outside the University campus. We provide MySQL accounts for student projects on request. To access a MySQL account you will need a pre-assigned database name, username and a password. Please use the Computer Science Helpdesk at http://www.cs.qub.ac.uk/helpdesk to request accounts and provide y ...
Chp4: Relational Algebra
... Query languages: Allow manipulation and retrieval of data from a database. Relational model supports simple, powerful QLs: ...
... Query languages: Allow manipulation and retrieval of data from a database. Relational model supports simple, powerful QLs: ...
Lecture4 - Electrical and Computer Engineering Department
... Easy for limited capability scripting languages, harder for general purpose programming languages like Java ...
... Easy for limited capability scripting languages, harder for general purpose programming languages like Java ...
Chapter 15 Presentation
... To learn the different system architectures that can be used to support multi-user database processing and the advantages and disadvantages of each. To understand the benefits and problems of downloading data. To understand the nature and problems of distributed database processing. To learn ...
... To learn the different system architectures that can be used to support multi-user database processing and the advantages and disadvantages of each. To understand the benefits and problems of downloading data. To understand the nature and problems of distributed database processing. To learn ...
Improving Database Performance
... Improving Database Performance Client requests are automatically directed to the system which owns the particular resource Only one of the clustered systems can ‘own’ and access a particular resource at a time. When a failure occurs, resource ownership can be dynamically transferred to another syst ...
... Improving Database Performance Client requests are automatically directed to the system which owns the particular resource Only one of the clustered systems can ‘own’ and access a particular resource at a time. When a failure occurs, resource ownership can be dynamically transferred to another syst ...
Models - Courses
... • The application doesn’t need to know how or where the database has stored the data, but just how to ask for it • Moving a database from one DBMS to another should not have a material effect on application ...
... • The application doesn’t need to know how or where the database has stored the data, but just how to ask for it • Moving a database from one DBMS to another should not have a material effect on application ...