Python sqlite3
... This method commits the current transaction. If you don't call this method, anything you did since the last call to commit() is not visible from other database connections. connection.close() This method closes the database connection. Note that this does not automatically call commit(). If you just ...
... This method commits the current transaction. If you don't call this method, anything you did since the last call to commit() is not visible from other database connections. connection.close() This method closes the database connection. Note that this does not automatically call commit(). If you just ...
Data Guard Technology Overview
... Data Guard Broker Distributed management framework that automates and centralizes the creation, maintenance, and monitoring of Data Guard configurations Create and enable Data Guard configurations, including setting up redo transport services and log apply services Manage an entire Data Guard ...
... Data Guard Broker Distributed management framework that automates and centralizes the creation, maintenance, and monitoring of Data Guard configurations Create and enable Data Guard configurations, including setting up redo transport services and log apply services Manage an entire Data Guard ...
notes #15
... Countermeasures – ComputerBased Controls • Access control – Based on the granting and revoking of privileges. – A privilege allows a user to create or access (that is read, write, or modify) some database object (such as a relation, view, and index) or to run certain DBMS utilities. – Privileges ar ...
... Countermeasures – ComputerBased Controls • Access control – Based on the granting and revoking of privileges. – A privilege allows a user to create or access (that is read, write, or modify) some database object (such as a relation, view, and index) or to run certain DBMS utilities. – Privileges ar ...
here
... Responsibilities • Processing rights define who is permitted to do what, when • The individuals performing these activities have full responsibility for the implications of their actions • Individuals are identified by a username and a password DAVID M. KROENKE’S DATABASE CONCEPTS, 2nd Edition © 200 ...
... Responsibilities • Processing rights define who is permitted to do what, when • The individuals performing these activities have full responsibility for the implications of their actions • Individuals are identified by a username and a password DAVID M. KROENKE’S DATABASE CONCEPTS, 2nd Edition © 200 ...
Slide 1
... Historical Roots: Files and File Systems • Managing data with file systems is obsolete – Understanding file system characteristics makes database design easier to understand – Awareness of problems with file systems helps prevent similar problems in DBMS – Knowledge of file systems is helpful if you ...
... Historical Roots: Files and File Systems • Managing data with file systems is obsolete – Understanding file system characteristics makes database design easier to understand – Awareness of problems with file systems helps prevent similar problems in DBMS – Knowledge of file systems is helpful if you ...
Chapter 1 - Websupport1
... Historical Roots: Files and File Systems • Managing data with file systems is obsolete – Understanding file system characteristics makes database design easier to understand – Awareness of problems with file systems helps prevent similar problems in DBMS – Knowledge of file systems is helpful if you ...
... Historical Roots: Files and File Systems • Managing data with file systems is obsolete – Understanding file system characteristics makes database design easier to understand – Awareness of problems with file systems helps prevent similar problems in DBMS – Knowledge of file systems is helpful if you ...
Lecture 3 - cda college
... • Orderly arrangement to logically access rows in a table • Index key – Index’s reference point – Points to data location identified by the key ...
... • Orderly arrangement to logically access rows in a table • Index key – Index’s reference point – Points to data location identified by the key ...
White Paper
... When TimesTen Application-Tier Database Cache (TimesTen Cache) is used to cache portions of an Oracle Database, one or more cache groups are created to hold the cached data, and a system agent (the cache agent) performs all asynchronous data transfers between the cache and Oracle Database. A cache g ...
... When TimesTen Application-Tier Database Cache (TimesTen Cache) is used to cache portions of an Oracle Database, one or more cache groups are created to hold the cached data, and a system agent (the cache agent) performs all asynchronous data transfers between the cache and Oracle Database. A cache g ...
Chapter 11
... – Algorithms based on statistics about objects being accessed – Adds up processing cost, I/O costs, resource costs to derive total cost ...
... – Algorithms based on statistics about objects being accessed – Adds up processing cost, I/O costs, resource costs to derive total cost ...
constraint
... If default referential integrity constraint is too strong, overriding the default referential integrity enforcement could be defined during database design. Also consider insert, update, delete actions for parent and child. The policy will be programmed into triggers during implementation Tw ...
... If default referential integrity constraint is too strong, overriding the default referential integrity enforcement could be defined during database design. Also consider insert, update, delete actions for parent and child. The policy will be programmed into triggers during implementation Tw ...
Select - FSU Computer Science Department
... while (not customer.eof()) { Customer c= customer.read(); rental.reset(); while (not rental.eof()) { Rental r[] = rental.readByAcctId(c.accountId); for (int i=0; i
... while (not customer.eof()) { Customer c= customer.read(); rental.reset(); while (not rental.eof()) { Rental r[] = rental.readByAcctId(c.accountId); for (int i=0; i
chap02
... requirements and constraints into functional modules that can be examined within the framework of their external models • Good design should: – Consider such relationships between views – Provide programmers with a set of restrictions that govern common entities Database Systems: Design, Implementat ...
... requirements and constraints into functional modules that can be examined within the framework of their external models • Good design should: – Consider such relationships between views – Provide programmers with a set of restrictions that govern common entities Database Systems: Design, Implementat ...
Kroenke-DBP-e10-PPT-Chapter09
... • In reality, CPU can execute only one instruction at a time – Transactions are interleaved meaning that the operating system quickly switches CPU services among tasks so that some portion of each of them is carried out in a given interval ...
... • In reality, CPU can execute only one instruction at a time – Transactions are interleaved meaning that the operating system quickly switches CPU services among tasks so that some portion of each of them is carried out in a given interval ...
Paper
... copy and then use the log file to redo all the changes made since the archive copy was taken. o If only the content of the database is unreliable, the database is restored by undoing all “unreliable” changes, using the log file. Some people claim that a better approach is to simply duplex the data w ...
... copy and then use the log file to redo all the changes made since the archive copy was taken. o If only the content of the database is unreliable, the database is restored by undoing all “unreliable” changes, using the log file. Some people claim that a better approach is to simply duplex the data w ...
Name
... select head –>name, head –>address from departments An expression such as “head–>name” is called a path expression Path expressions help avoid explicit joins If department head were not a reference, a join of departments with people would be required to get at the address Makes expressing th ...
... select head –>name, head –>address from departments An expression such as “head–>name” is called a path expression Path expressions help avoid explicit joins If department head were not a reference, a join of departments with people would be required to get at the address Makes expressing th ...
Spatio-Temporal Database
... Spatial databases contain large amounts of information, temporal information further increases the database size Increased difficulty of rapid data retrieval Using STDB to Replace old systems & data Building new STIS on existing SIS Utilization of a data warehouse, enabling several legacy systems to ...
... Spatial databases contain large amounts of information, temporal information further increases the database size Increased difficulty of rapid data retrieval Using STDB to Replace old systems & data Building new STIS on existing SIS Utilization of a data warehouse, enabling several legacy systems to ...
CC2
... The highest level in the example hierarchy is the entire database. The levels below are of type area, file or relation and record in that order. Database System Concepts ...
... The highest level in the example hierarchy is the entire database. The levels below are of type area, file or relation and record in that order. Database System Concepts ...
Staging Area in near real-time DWH
... No additional workload on the host OLTP. Datafiles with full set of data are neither transferred nor copied. o Volume of data transferred between the OLTP and DWH is determined merely by the volume of data changes (size of archived redo logs). Elapsed time of refresh process of the staging area – th ...
... No additional workload on the host OLTP. Datafiles with full set of data are neither transferred nor copied. o Volume of data transferred between the OLTP and DWH is determined merely by the volume of data changes (size of archived redo logs). Elapsed time of refresh process of the staging area – th ...
October 10, 2015
... irreversible. To confirm the upgrade, type the name of the server ‘pluto' below. The duration of upgrade ranges from several hours to days depending on the size, edition and number of databases in the server. During this time all databases on this server will remain online but server and database ma ...
... irreversible. To confirm the upgrade, type the name of the server ‘pluto' below. The duration of upgrade ranges from several hours to days depending on the size, edition and number of databases in the server. During this time all databases on this server will remain online but server and database ma ...
Recommended Solutions for SCR745
... •The original SCR 745 requested ERCOT perform in depth analysis in order to determine root causes for unplanned system outages. •At the July 13 RMS meeting, RMS approved the revised SCR745 which included the full evaluation of ERCOT systems as well as options for resolving ERCOT system failures and ...
... •The original SCR 745 requested ERCOT perform in depth analysis in order to determine root causes for unplanned system outages. •At the July 13 RMS meeting, RMS approved the revised SCR745 which included the full evaluation of ERCOT systems as well as options for resolving ERCOT system failures and ...
SYSTEM 2000 Data Management Software Release 12 Enhancements and Why SYSTEM 2000 Software Is the Best Place to Maintain Your Production SAS Data
... SAS System's programmability with the power of SYSTEM 2000 software, you can meet the wide range of needs that exist in your organization. There are virtually no limitations on access to data stored in a SYSTEM 2000 database with the SAS System. The SASfACCESS product enables you to view a SYSTEM 20 ...
... SAS System's programmability with the power of SYSTEM 2000 software, you can meet the wide range of needs that exist in your organization. There are virtually no limitations on access to data stored in a SYSTEM 2000 database with the SAS System. The SASfACCESS product enables you to view a SYSTEM 20 ...
Security - Computer Science and Engineering Department
... performance since updates do not have to be replicated. Data stripping is performed at the level of blocks. 2. RAID 1 - Mirrored: This level maintains (mirrors) two identical copies of the data across different disks. To maintain consistency in the presence of disk failure, writes may not performed ...
... performance since updates do not have to be replicated. Data stripping is performed at the level of blocks. 2. RAID 1 - Mirrored: This level maintains (mirrors) two identical copies of the data across different disks. To maintain consistency in the presence of disk failure, writes may not performed ...
How to Back Up and Restore a Dynamics NAV 2015 Database
... Optional Setup: In NAV, you can use the Company Information page's System Indicator Style field to change the color of the system indicator bar displayed at the top right of all NAV pages. I use this to make it easy for users to differentiate their production and testing databases. When the System I ...
... Optional Setup: In NAV, you can use the Company Information page's System Indicator Style field to change the color of the system indicator bar displayed at the top right of all NAV pages. I use this to make it easy for users to differentiate their production and testing databases. When the System I ...
2_Oracle OCP Admin Exam
... LOG_CHECKPOINT_TIMEOUT. These two parameters allow for transaction volume-based or time-based checkpoint intervals. Data Concurrency and Statement-level Read Consistency In multiple-user environments, it must be remembered that there are special considerations required to ensure that users don't ove ...
... LOG_CHECKPOINT_TIMEOUT. These two parameters allow for transaction volume-based or time-based checkpoint intervals. Data Concurrency and Statement-level Read Consistency In multiple-user environments, it must be remembered that there are special considerations required to ensure that users don't ove ...
Oracle Applications 11.5.10 Architecture and Tools Overview
... • Patch History for partially applied patches • ODF support for locally managed tablespaces ...
... • Patch History for partially applied patches • ODF support for locally managed tablespaces ...