Database System Concepts and Architecture
... he architecture of DBMS packages has evolved from the early monolithic systems, where the whole DBMS software package was one tightly integrated system, to the modern DBMS packages that are modular in design, with a client/server system architecture. This evolution mirrors the trends in computing, w ...
... he architecture of DBMS packages has evolved from the early monolithic systems, where the whole DBMS software package was one tightly integrated system, to the modern DBMS packages that are modular in design, with a client/server system architecture. This evolution mirrors the trends in computing, w ...
Middle-Tier Database Caching for e-Business - Pages
... change. Firstly, it is desired that the decision to deploy a DBCache could be made for an arbitrary shrink-wrapped application by local administrators who do not have access to the application source code. Secondly, requiring the application to be cognizant of the DBCache would result in increased c ...
... change. Firstly, it is desired that the decision to deploy a DBCache could be made for an arbitrary shrink-wrapped application by local administrators who do not have access to the application source code. Secondly, requiring the application to be cognizant of the DBCache would result in increased c ...
MYCH3
... IC: condition that must be true for any instance of the database; e.g., domain constraints. ...
... IC: condition that must be true for any instance of the database; e.g., domain constraints. ...
ppt
... queue and therefore not lost in case of failure. Described in detail in Chapter 19 (Distributed Databases) Before an agent commits, it writes to the persistent message queue whatever messages need to be sent out. The persistent message system must make sure the messages get delivered eventuall ...
... queue and therefore not lost in case of failure. Described in detail in Chapter 19 (Distributed Databases) Before an agent commits, it writes to the persistent message queue whatever messages need to be sent out. The persistent message system must make sure the messages get delivered eventuall ...
From Database Concepts to Application: Use Problem
... There can be some repetition of modeling concepts when the transition from a logical data model to a physical one is demonstrated with the team tracking scenario. At the same time students should work through part one of the APEX tutorial which introduces students to many APEX features. Students lea ...
... There can be some repetition of modeling concepts when the transition from a logical data model to a physical one is demonstrated with the team tracking scenario. At the same time students should work through part one of the APEX tutorial which introduces students to many APEX features. Students lea ...
4. Intermediate SQL
... create view physics_fall_2009_watson as (select course_id, room_number from (select course.course_id, building, room_number from course, section where course.course_id = section.course_id and course.dept_name = ’Physics’ and section.semester = ’Fall’ and section.year = ’2009’) where building= ’Watso ...
... create view physics_fall_2009_watson as (select course_id, room_number from (select course.course_id, building, room_number from course, section where course.course_id = section.course_id and course.dept_name = ’Physics’ and section.semester = ’Fall’ and section.year = ’2009’) where building= ’Watso ...
Oracle Migration Assessment
... for the CallTrack26 database/schema. This migration assessment focuses on moving / converting the database and related objects from an Oracle implementation to a Postgres Plus Advanced Server implementation. While the client application is noted where relevant and discussed in Appendix C, it is not ...
... for the CallTrack26 database/schema. This migration assessment focuses on moving / converting the database and related objects from an Oracle implementation to a Postgres Plus Advanced Server implementation. While the client application is noted where relevant and discussed in Appendix C, it is not ...
Principles of Transaction-Oriented Database Recovery
... of the field. There are, in fact, a numcepts and facilities that evolved in the sinber of recent publications that attempt to gle-user batch environments of the early days have given rise to efficient multiuser summarize what is known about different database systems with user-friendly inter- aspect ...
... of the field. There are, in fact, a numcepts and facilities that evolved in the sinber of recent publications that attempt to gle-user batch environments of the early days have given rise to efficient multiuser summarize what is known about different database systems with user-friendly inter- aspect ...
The Great Database Consolidation, Project Server 2010 to 2013
... The type must be a valid GUID, in the form 12345678-90ab-cdef-1234-567890bcdefgh; or a valid name of SharePoint web application (for example, MyOfficeApp1); or an instance of a valid SPWebApplication object. Specifies the instance of the database service on which the databases are located. The type ...
... The type must be a valid GUID, in the form 12345678-90ab-cdef-1234-567890bcdefgh; or a valid name of SharePoint web application (for example, MyOfficeApp1); or an instance of a valid SPWebApplication object. Specifies the instance of the database service on which the databases are located. The type ...
cos 346 day 8 & 9
... foreign key in all related child rows to the new value – Cascading deletions automatically delete all related child rows Copyright © 2004 Database Processing: Fundamentals, Design, and Implementation, 9/e by David M. Kroenke ...
... foreign key in all related child rows to the new value – Cascading deletions automatically delete all related child rows Copyright © 2004 Database Processing: Fundamentals, Design, and Implementation, 9/e by David M. Kroenke ...
Using Database Performance Warehouse to Monitor Microsoft SQL
... In other database platforms that SAP supports, a single database application can contain only one database. Therefore, the original Database Performance Warehouse architecture contains a characteristic named Database name. This characteristic always contains the database name you chose when you setu ...
... In other database platforms that SAP supports, a single database application can contain only one database. Therefore, the original Database Performance Warehouse architecture contains a characteristic named Database name. This characteristic always contains the database name you chose when you setu ...
recursive relationship
... foreign key • However, in a 1:N the foreign key always goes into the many-side of the relationship – The 1 side is called the parent – The N side is called the child KROENKE and AUER - DATABASE CONCEPTS (3rd Edition) © 2008 Pearson Prentice Hall ...
... foreign key • However, in a 1:N the foreign key always goes into the many-side of the relationship – The 1 side is called the parent – The N side is called the child KROENKE and AUER - DATABASE CONCEPTS (3rd Edition) © 2008 Pearson Prentice Hall ...
Chapter 14 Methodology - Conceptual Database Design
... In the identification of entities, we may have identified two entities that represent the same object in the enterprise. For example, we may have identified the two entities Client and Renter that are actually the same; in other words, Client is a synonym for Renter. In this case, the two entities s ...
... In the identification of entities, we may have identified two entities that represent the same object in the enterprise. For example, we may have identified the two entities Client and Renter that are actually the same; in other words, Client is a synonym for Renter. In this case, the two entities s ...
Modeling Data for Business Processes
... part of the business entity for the repair process in Fig. 1. Each repair has an ID (renamed to aID to avoid confusion), several services (aService Info), and a customer (aCustomer). Each service may require multiple replacement parts (aReplacement Parts) and repairpersons (aRepairperson). Once busi ...
... part of the business entity for the repair process in Fig. 1. Each repair has an ID (renamed to aID to avoid confusion), several services (aService Info), and a customer (aCustomer). Each service may require multiple replacement parts (aReplacement Parts) and repairpersons (aRepairperson). Once busi ...
XML
... Nesting is supported in object-relational databases (?*!—CZ) But nesting is appropriate when transferring data ...
... Nesting is supported in object-relational databases (?*!—CZ) But nesting is appropriate when transferring data ...
Lock-Based Protocols
... txns conflict due to modifying different data, there is usually also a shared item they both modify too (like a total quantity) so SI will abort one of them ...
... txns conflict due to modifying different data, there is usually also a shared item they both modify too (like a total quantity) so SI will abort one of them ...
The Relational Model
... Where do ICs Come From? ICs are based upon the semantics of the realworld enterprise that is being described in the database relations. We can check a database instance to see if an IC is violated, but we can NEVER infer that an IC is true by looking at an instance. ...
... Where do ICs Come From? ICs are based upon the semantics of the realworld enterprise that is being described in the database relations. We can check a database instance to see if an IC is violated, but we can NEVER infer that an IC is true by looking at an instance. ...
6. Create and use primary keys
... If your field names do not make ‘good English’, you could use a caption as its label on forms. (Example: Some people prefer not to put spaces in field names and may abbreviate items. The field name ‘custno’ may then be given a caption of ‘customer number’ If nothing is entered by the data entry oper ...
... If your field names do not make ‘good English’, you could use a caption as its label on forms. (Example: Some people prefer not to put spaces in field names and may abbreviate items. The field name ‘custno’ may then be given a caption of ‘customer number’ If nothing is entered by the data entry oper ...
Bad Things Happen to Good People: How to Minimize the Pain
... – You have never created a full database backup – The time elapsed since the last full backup is more than a specified number of hours – The transaction log space consumed since the last backup is more than a specified number of 4 KB pages (in archive logging mode only). ...
... – You have never created a full database backup – The time elapsed since the last full backup is more than a specified number of hours – The transaction log space consumed since the last backup is more than a specified number of 4 KB pages (in archive logging mode only). ...
Chapter 10: Storage and File Structure
... • The chance that some disk out of a set of N disks will fail is much higher than the chance that a specific single disk will fail. E.g., a system with 100 disks, each with MTTF of 100,000 hours (approx. 11 years), will have a system MTTF of 1000 hours (approx. 41 days). • Redundancy – store extra i ...
... • The chance that some disk out of a set of N disks will fail is much higher than the chance that a specific single disk will fail. E.g., a system with 100 disks, each with MTTF of 100,000 hours (approx. 11 years), will have a system MTTF of 1000 hours (approx. 41 days). • Redundancy – store extra i ...
Document
... tables found within the user/designer-created database – Contains (at least) all the attribute names and characteristics for each table in the system – Contains metadata—data about data – Sometimes described as “the database designer’s database” because it records the design decisions about tables a ...
... tables found within the user/designer-created database – Contains (at least) all the attribute names and characteristics for each table in the system – Contains metadata—data about data – Sometimes described as “the database designer’s database” because it records the design decisions about tables a ...
Remaining topics in JDBC
... The Java Database Connectivity (JDBC) API is the industry standard for database-independent connectivity between the Java programming language and a wide range of databases –SQL databases and other tabular data sources, such as spreadsheets or flat files. The JDBC API provides a call-level API for S ...
... The Java Database Connectivity (JDBC) API is the industry standard for database-independent connectivity between the Java programming language and a wide range of databases –SQL databases and other tabular data sources, such as spreadsheets or flat files. The JDBC API provides a call-level API for S ...
DataGuard SwitchOver steps
... If your databases are using Oracle Managed Files (OMF) or you have already set the parameter LOG_FILE_NAME_CONVERT you can skip this step as the online log files will always be cleared automatically. Clearing online redo logs as part of the SWITCHOVER TO PRIMARY command can make the switchover comma ...
... If your databases are using Oracle Managed Files (OMF) or you have already set the parameter LOG_FILE_NAME_CONVERT you can skip this step as the online log files will always be cleared automatically. Clearing online redo logs as part of the SWITCHOVER TO PRIMARY command can make the switchover comma ...