Lesson 16 Managing Undo
... a query starts at 12 Noon and executes for 15 minutes, all data retrieved by that query will be exactly as it was at 12 noon; updates made between 12 and 12:15 will not be included in the result set. ¾ Support database recovery operations. Recovery involves applying all changes in the redo logs (opt ...
... a query starts at 12 Noon and executes for 15 minutes, all data retrieved by that query will be exactly as it was at 12 noon; updates made between 12 and 12:15 will not be included in the result set. ¾ Support database recovery operations. Recovery involves applying all changes in the redo logs (opt ...
... certain transactions, therefore, this statement may not apply to you. This information could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein; these changes will be incorporated in new editions of the publication. IBM may make improvemen ...
Materialized View Creation and Transformation of Schemas in
... systems, including CD or book archives and contact information for friends and family, typically contain few tuples (order of hundreds). The consequences of unavailability2 for such database systems are, in general, not critical; it would still be possible to play music even if the CD archive was ...
... systems, including CD or book archives and contact information for friends and family, typically contain few tuples (order of hundreds). The consequences of unavailability2 for such database systems are, in general, not critical; it would still be possible to play music even if the CD archive was ...
ppt
... unless they pertain to only one relation In order to ensure that all functional dependencies hold in a decomposition ...
... unless they pertain to only one relation In order to ensure that all functional dependencies hold in a decomposition ...
Document
... Example: Suppose employees of a bank may have jobs (responsibilities) at multiple branches, with different jobs at different branches. Then there is a ternary relationship set between entity sets employee, job, and branch Relationships between more than two entity sets are rare. Most ...
... Example: Suppose employees of a bank may have jobs (responsibilities) at multiple branches, with different jobs at different branches. Then there is a ternary relationship set between entity sets employee, job, and branch Relationships between more than two entity sets are rare. Most ...
Chapter 6
... Example: Suppose employees of a bank may have jobs (responsibilities) at multiple branches, with different jobs at different branches. Then there is a ternary relationship set between entity sets employee, job, and branch Relationships between more than two entity sets are rare. Most ...
... Example: Suppose employees of a bank may have jobs (responsibilities) at multiple branches, with different jobs at different branches. Then there is a ternary relationship set between entity sets employee, job, and branch Relationships between more than two entity sets are rare. Most ...
Document
... add the resulting functional dependencies to F + for each pair of functional dependencies f1and f2 in F + if f1 and f2 can be combined using transitivity then add the resulting functional dependency to F + until F + does not change any further ...
... add the resulting functional dependencies to F + for each pair of functional dependencies f1and f2 in F + if f1 and f2 can be combined using transitivity then add the resulting functional dependency to F + until F + does not change any further ...
Chapter 6: Entity-Relationship Model
... Example: Suppose employees of a bank may have jobs (responsibilities) at multiple branches, with different jobs at different branches. Then there is a ternary relationship set between entity sets employee, job, and branch Relationships between more than two entity sets are rare. Most ...
... Example: Suppose employees of a bank may have jobs (responsibilities) at multiple branches, with different jobs at different branches. Then there is a ternary relationship set between entity sets employee, job, and branch Relationships between more than two entity sets are rare. Most ...
Instructor
... and the course ID of the courses they taught. select name, course_id from instructor, teaches where instructor.ID = teaches.ID Find the course ID, semester, year and title of each course offered ...
... and the course ID of the courses they taught. select name, course_id from instructor, teaches where instructor.ID = teaches.ID Find the course ID, semester, year and title of each course offered ...
Upgrading from SQL Server 2005 Express Edition to Workgroup or
... SQL Server 2005 that your organization uses. SQL Server 2005 enables you to upgrade to “higher” editions seamlessly without changing your applications or business processes. The seamless upgrade paths mean that you can use the edition of SQL Server 2005 that best suits your current needs, while givi ...
... SQL Server 2005 that your organization uses. SQL Server 2005 enables you to upgrade to “higher” editions seamlessly without changing your applications or business processes. The seamless upgrade paths mean that you can use the edition of SQL Server 2005 that best suits your current needs, while givi ...
Chapter 7: Relational Database Design
... practice unless they pertain to only one relation If it is sufficient to test only those dependencies on each individual ...
... practice unless they pertain to only one relation If it is sufficient to test only those dependencies on each individual ...
KorthDB6_ch7
... The phases of the database design Understanding the needs of users and enterprises Conceptual design using the abstract model like ER Model Specification of functional requirements (operations & transactions) Converting the abstract model to implementation details Logical design phase: con ...
... The phases of the database design Understanding the needs of users and enterprises Conceptual design using the abstract model like ER Model Specification of functional requirements (operations & transactions) Converting the abstract model to implementation details Logical design phase: con ...
KorthDB6_ch16
... Output of updated blocks to stable storage can take place at any time before or after transaction commit Order in which blocks are output can be different from the order in which they are written. The deferred-modification scheme performs updates to buffer/disk ...
... Output of updated blocks to stable storage can take place at any time before or after transaction commit Order in which blocks are output can be different from the order in which they are written. The deferred-modification scheme performs updates to buffer/disk ...
Relationship Sets
... Example: Suppose employees of a bank may have jobs (responsibilities) at multiple branches, with different jobs at different branches. Then there is a ternary relationship set between entity sets employee, job, and branch Relationships between more than two entity sets are rare. Most ...
... Example: Suppose employees of a bank may have jobs (responsibilities) at multiple branches, with different jobs at different branches. Then there is a ternary relationship set between entity sets employee, job, and branch Relationships between more than two entity sets are rare. Most ...
R - Electrical and Computer Engineering Department
... Constraints, including functional dependencies, are costly to check in ...
... Constraints, including functional dependencies, are costly to check in ...
Chapter 7: Relational Database Design
... for each functional dependency f in F+ apply reflexivity and augmentation rules on f add the resulting functional dependencies to F + for each pair of functional dependencies f1and f2 in F + if f1 and f2 can be combined using transitivity then add the resulting functional depen ...
... for each functional dependency f in F+ apply reflexivity and augmentation rules on f add the resulting functional dependencies to F + for each pair of functional dependencies f1and f2 in F + if f1 and f2 can be combined using transitivity then add the resulting functional depen ...
Lecture 8 - Electrical and Computer Engineering Department
... practice unless they pertain to only one relation If it is sufficient to test only those dependencies on each individual ...
... practice unless they pertain to only one relation If it is sufficient to test only those dependencies on each individual ...
ppt - CSE, IIT Bombay
... practice unless they pertain to only one relation If it is sufficient to test only those dependencies on each individual ...
... practice unless they pertain to only one relation If it is sufficient to test only those dependencies on each individual ...
Chapter 1: Introduction
... Constraints, including functional dependencies, are costly to check in ...
... Constraints, including functional dependencies, are costly to check in ...
ppt - Purdue Computer Science
... practice unless they pertain to only one relation If it is sufficient to test only those dependencies on each individual ...
... practice unless they pertain to only one relation If it is sufficient to test only those dependencies on each individual ...
Chapter 7: Relational Database Design
... practice unless they pertain to only one relation If it is sufficient to test only those dependencies on each individual ...
... practice unless they pertain to only one relation If it is sufficient to test only those dependencies on each individual ...
Chapter 7: Relational Database Design
... practice unless they pertain to only one relation If it is sufficient to test only those dependencies on each individual ...
... practice unless they pertain to only one relation If it is sufficient to test only those dependencies on each individual ...
PHYLUM MOLLUSCA - Formatted
... It lies above the head-foot complex and contains the main organs of the body. It is spirally coiled like the shell and fills all the whorls of the shell. The visceral mass undergoes torsion (will be discussed later). The visceral mass is soft and is covered by a delicate mantle or pallium (Fig. 3). ...
... It lies above the head-foot complex and contains the main organs of the body. It is spirally coiled like the shell and fills all the whorls of the shell. The visceral mass undergoes torsion (will be discussed later). The visceral mass is soft and is covered by a delicate mantle or pallium (Fig. 3). ...