Week 9 - Purdue Engineering
... hierarchies. Some foreign key constraints are also implicit in the definition of a relationship set. – Some of these constraints can be expressed in SQL only if we use general CHECK constraints or assertions. – Some constraints (notably, functional dependencies) cannot be expressed in the ER model. ...
... hierarchies. Some foreign key constraints are also implicit in the definition of a relationship set. – Some of these constraints can be expressed in SQL only if we use general CHECK constraints or assertions. – Some constraints (notably, functional dependencies) cannot be expressed in the ER model. ...
Hackproofing Lotus Domino Web Server
... to get this information - see the section on Database Structure Enumeration. There is information freely available on how to prevent access to the default Navigator on the Notes web site (www.notes.com) - however their suggested fix doesn't work and can be easily by-passed. It describes how to creat ...
... to get this information - see the section on Database Structure Enumeration. There is information freely available on how to prevent access to the default Navigator on the Notes web site (www.notes.com) - however their suggested fix doesn't work and can be easily by-passed. It describes how to creat ...
Sample Chapter 5 (PDF, 60 Pages
... move was to get a better idea of the guests who were staying at The 1881. The old Hotel Reservation and Management System (version 2.0) was stable enough, but did not provide the ability to analyze guest information other than sorting the list by name, address, and telephone number. The updated vers ...
... move was to get a better idea of the guests who were staying at The 1881. The old Hotel Reservation and Management System (version 2.0) was stable enough, but did not provide the ability to analyze guest information other than sorting the list by name, address, and telephone number. The updated vers ...
A NGSSoftware Insight Security Research Publication
... get this information - see the section on Database Structure Enumeration. There is information freely available on how to prevent access to the default Navigator on the Notes web site (www.notes.com) - however their suggested fix doesn't work and can be easily bypassed. It describes how to create a ...
... get this information - see the section on Database Structure Enumeration. There is information freely available on how to prevent access to the default Navigator on the Notes web site (www.notes.com) - however their suggested fix doesn't work and can be easily bypassed. It describes how to create a ...
Chapter 7: Relational Database Design
... Lossless-join decomposition: Otherwise decomposition would result in information loss. No redundancy: The relations Ri preferably should be in either BoyceCodd Normal Form or Third Normal Form. Dependency preservation: Let Fi be the set of dependencies F+ that includes only attributes in Ri. ...
... Lossless-join decomposition: Otherwise decomposition would result in information loss. No redundancy: The relations Ri preferably should be in either BoyceCodd Normal Form or Third Normal Form. Dependency preservation: Let Fi be the set of dependencies F+ that includes only attributes in Ri. ...
Implementation Plan - Project Management
... 2.9 Implementation Validation This is used to document that implementation has been successful and that the basic steps of being able to authenticate to the system is possible and whatever authorisation level assigned to the initial user base is in place. For deployments involving several servers (l ...
... 2.9 Implementation Validation This is used to document that implementation has been successful and that the basic steps of being able to authenticate to the system is possible and whatever authorisation level assigned to the initial user base is in place. For deployments involving several servers (l ...
Representing Weak Entity Sets
... columns for the primary keys of the two participating entity sets, and any descriptive attributes of the relationship set. E.g.: table for relationship set borrower ...
... columns for the primary keys of the two participating entity sets, and any descriptive attributes of the relationship set. E.g.: table for relationship set borrower ...
InterSystems Caché Database Mirroring
... The backup doesn’t hear from the primary within a required interval, which could occur in the case of network problems An application or host problem causes Caché to become unresponsive on the primary A takeover is initiated by an operator or script During failover, the backup system ensures it is f ...
... The backup doesn’t hear from the primary within a required interval, which could occur in the case of network problems An application or host problem causes Caché to become unresponsive on the primary A takeover is initiated by an operator or script During failover, the backup system ensures it is f ...
Lecture 7 - Relational Algebra II
... can be dealt with by either. rejecting the insertion and returning an error message to the user. inserting a tuple (“L-37”, “Perryridge”, null) into the loan relation Some updates through views are impossible to translate into ...
... can be dealt with by either. rejecting the insertion and returning an error message to the user. inserting a tuple (“L-37”, “Perryridge”, null) into the loan relation Some updates through views are impossible to translate into ...
SES06 - Computer Science
... This style of driver converts JDBC calls into the network protocol used directly by DBMSs, allowing a direct call from the client machine to the DBMS server and providing a practical ...
... This style of driver converts JDBC calls into the network protocol used directly by DBMSs, allowing a direct call from the client machine to the DBMS server and providing a practical ...
Microsoft Access 2010
... Omitting Duplicates • Open the query in Design view • Tap or click an empty field in the design grid • Tap or click the Property Sheet button (QUERY TOOLS DESIGN tab | Show/Hide group) to display the property sheet • Tap or click the Unique Values property box, and then tap or click the arrow that ...
... Omitting Duplicates • Open the query in Design view • Tap or click an empty field in the design grid • Tap or click the Property Sheet button (QUERY TOOLS DESIGN tab | Show/Hide group) to display the property sheet • Tap or click the Unique Values property box, and then tap or click the arrow that ...
Saimaa University of Applied Sciences Faculty of Technology Lappeenranta Double Degree Information Technology
... of a company at present. Every company has its own management and administration system which is necessary for the function of a whole company. That kind of system was in the past presented in a paper form, where all important data has been written by hand and stored in a card file. But with coming ...
... of a company at present. Every company has its own management and administration system which is necessary for the function of a whole company. That kind of system was in the past presented in a paper form, where all important data has been written by hand and stored in a card file. But with coming ...
An Adaptive Replication Environment for a Relational Database
... need database will be, inexorably, blocked from accessing any information - until the failure be remedied and the database back to normal operation. On the other hand, the idea of distributing data geographically appears in objection to leave them in a single centralized server. In this direction, a ...
... need database will be, inexorably, blocked from accessing any information - until the failure be remedied and the database back to normal operation. On the other hand, the idea of distributing data geographically appears in objection to leave them in a single centralized server. In this direction, a ...
Oracle 10g Backup and Recovery New Features
... • Prior to Oracle 10g, the newly generated redo log files could not be used with the backups taken in the past. Therefore, it was important to take an immediate backup since all previous backups became invalid. • In addition, if you used RMAN catalog for future backups, you needed to issue the follo ...
... • Prior to Oracle 10g, the newly generated redo log files could not be used with the backups taken in the past. Therefore, it was important to take an immediate backup since all previous backups became invalid. • In addition, if you used RMAN catalog for future backups, you needed to issue the follo ...
DBC-e04-Chapter-02-PP
... Nonunique Key Data value may be shared among several rows. Consequently, the key will identify a set of rows. ...
... Nonunique Key Data value may be shared among several rows. Consequently, the key will identify a set of rows. ...
Oracle Database 11g Family
... Oracle Real Application Clusters (RAC) harnesses the processing power of multiple, interconnected servers on a cluster. It provides unlimited scalability and high availability for any packaged or custom application by exploiting clustered hardware configurations, with the simplicity and ease of use ...
... Oracle Real Application Clusters (RAC) harnesses the processing power of multiple, interconnected servers on a cluster. It provides unlimited scalability and high availability for any packaged or custom application by exploiting clustered hardware configurations, with the simplicity and ease of use ...
Chs. 1 + 2
... If a new dept. is created, then a new file is needed, to store info about all the instructors in that dept. ...
... If a new dept. is created, then a new file is needed, to store info about all the instructors in that dept. ...
Chapter 7: Relational Database Design
... First Normal Form (Cont’d) Atomicity is actually a property of how the elements of the domain are ...
... First Normal Form (Cont’d) Atomicity is actually a property of how the elements of the domain are ...
Database: SQL, MySQL, DBI and ADO.NET
... Table formed by selecting department and location data from the Employee table. ...
... Table formed by selecting department and location data from the Employee table. ...
(A) R
... check only the dependencies in the given set F for violation of BCNF, rather than checking all dependencies in F+. ...
... check only the dependencies in the given set F for violation of BCNF, rather than checking all dependencies in F+. ...
Staroffice Base.pdf
... Database software provides a powerful set of tools for entering and updating information, deleting information, sorting data, searching for specific data, and creating reports. Base is the StarOffice database application. Base technically creates databases referred to as “relational databases.” A re ...
... Database software provides a powerful set of tools for entering and updating information, deleting information, sorting data, searching for specific data, and creating reports. Base is the StarOffice database application. Base technically creates databases referred to as “relational databases.” A re ...
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... Denormalization is the process of modifying a perfectly normalized database design for performance reasons. Denormalization is a natural and necessary part of database design, but must follow proper normalization. Here are a few words from Date on denormalization: The general idea of normalization.. ...
... Denormalization is the process of modifying a perfectly normalized database design for performance reasons. Denormalization is a natural and necessary part of database design, but must follow proper normalization. Here are a few words from Date on denormalization: The general idea of normalization.. ...