PGS99
... database state machine approach can be used to reduce the transaction abort rate by using a reordering certi cation test, which looks for possible serializable executions before deciding to abort a transaction. We have developed a simulation model of the database state machine and conducted several ...
... database state machine approach can be used to reduce the transaction abort rate by using a reordering certi cation test, which looks for possible serializable executions before deciding to abort a transaction. We have developed a simulation model of the database state machine and conducted several ...
Document
... Modifying the database without ensuring that the transaction will commit may leave the database in an inconsistent state. Consider transaction Ti that transfers $50 from account A to account B; goal is either to perform all database modifications made by Ti or none at all. Several output operations ...
... Modifying the database without ensuring that the transaction will commit may leave the database in an inconsistent state. Consider transaction Ti that transfers $50 from account A to account B; goal is either to perform all database modifications made by Ti or none at all. Several output operations ...
Wizards
... and then click “Finish”. 4. You should now be in “Datasheet view” where you can enter data. Enter data for 4 or 5 plants. Note the column heading for “Flowering”. Also, note that “Flowering” must be Yes or No. Make some of your plants flowering and some not flowering. Close Datasheet view (Click X i ...
... and then click “Finish”. 4. You should now be in “Datasheet view” where you can enter data. Enter data for 4 or 5 plants. Note the column heading for “Flowering”. Also, note that “Flowering” must be Yes or No. Make some of your plants flowering and some not flowering. Close Datasheet view (Click X i ...
Object operations benchmark
... project, or a working set from a larger knowledge base used by an expert system. A DBMS ...
... project, or a working set from a larger knowledge base used by an expert system. A DBMS ...
epiCentre_UserManual_ITAdministrators
... As part of the epiCentre configuration wizard, each client is asked for an encryption key. This encryption key is used for all database encryption. Every client at a facility must be configured with the same encryption key so that they can encrypt and decrypt the data in a common fashion. The benefi ...
... As part of the epiCentre configuration wizard, each client is asked for an encryption key. This encryption key is used for all database encryption. Every client at a facility must be configured with the same encryption key so that they can encrypt and decrypt the data in a common fashion. The benefi ...
Determining the IOPS Needs for Oracle Database on AWS
... performance even with peak load. If you choose an IOPS number based on average IOPS used by your existing database, then you will have sufficient IOPS to service the database in most cases but database performance will suffer at peak load. This issue can be mitigated to some extent by using Amazon E ...
... performance even with peak load. If you choose an IOPS number based on average IOPS used by your existing database, then you will have sufficient IOPS to service the database in most cases but database performance will suffer at peak load. This issue can be mitigated to some extent by using Amazon E ...
Slide 1
... • Source – The database you are getting your audit data from. Regardless of how many nodes there are in your dataguard config, there is only 1 source. • Agent – Tied to a single server, an Agent connects to the Audit Vault Server to insert the audit trail data into the database. It “manages” the col ...
... • Source – The database you are getting your audit data from. Regardless of how many nodes there are in your dataguard config, there is only 1 source. • Agent – Tied to a single server, an Agent connects to the Audit Vault Server to insert the audit trail data into the database. It “manages” the col ...
Module 1: Introduction
... where loan.loan_number = borrower.loan_number and borrower.customer_name = depositor.customer_name and depositor.account_number = account.account_number and account.balance >= 1000))) ...
... where loan.loan_number = borrower.loan_number and borrower.customer_name = depositor.customer_name and depositor.account_number = account.account_number and account.balance >= 1000))) ...
Converting to Transparent Data Encryption with Oracle Data Guard
... manually each time the database is started. The wallet will be created on one primary instance and must be manually copied to all other Oracle RAC nodes of a primary and standby database. If the database is already using an encryption wallet or keystore, the same may be reused but Oracle recommends ...
... manually each time the database is started. The wallet will be created on one primary instance and must be manually copied to all other Oracle RAC nodes of a primary and standby database. If the database is already using an encryption wallet or keystore, the same may be reused but Oracle recommends ...
ppt
... 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 ...
ITD Database Design Phase Report
... administration to accurately access and assess the status of various ITD-related site information, such as circuit, LDF or router data. In addition, it is difficult for ITD staff who must perform technical support to access important ITD-related information while out in the field. The purpose of the ...
... administration to accurately access and assess the status of various ITD-related site information, such as circuit, LDF or router data. In addition, it is difficult for ITD staff who must perform technical support to access important ITD-related information while out in the field. The purpose of the ...
Chapter 14: Query Optimization
... System R and Starburst use a hierarchical procedure based on the nested-block concept of SQL: heuristic rewriting followed by cost-based join-order optimization. ...
... System R and Starburst use a hierarchical procedure based on the nested-block concept of SQL: heuristic rewriting followed by cost-based join-order optimization. ...
Everything You Wanted to Know about RMAN
... these things then rman is the solution: 1. Increase the volume of the data you are backing up. 2. Increase the speed or decrease the duration of backups. 3 .Increase the speed or decrease the duration of restores and recoveries. 4. Prevent loss of any data, ever. Since rman is the only way to accomp ...
... these things then rman is the solution: 1. Increase the volume of the data you are backing up. 2. Increase the speed or decrease the duration of backups. 3 .Increase the speed or decrease the duration of restores and recoveries. 4. Prevent loss of any data, ever. Since rman is the only way to accomp ...
IC Database Configuration and Maintenance for SQL Server
... addresses and phone numbers. To serve that collection of information, a small database engine would suffice. However, a corporation typically stores a much larger quantity of information. A database can have millions of rows and columns of data, stored in multiple tables linked into a massive storag ...
... addresses and phone numbers. To serve that collection of information, a small database engine would suffice. However, a corporation typically stores a much larger quantity of information. A database can have millions of rows and columns of data, stored in multiple tables linked into a massive storag ...
viva voce questions
... Ans.This can happen when the database has many transactions that are changing data, then committing or rolling back. The rollback data can be overwritten if the rollback segments are too small for the number and size of the changes being made. 54. What are the different kinds of locks? Ans.General t ...
... Ans.This can happen when the database has many transactions that are changing data, then committing or rolling back. The rollback data can be overwritten if the rollback segments are too small for the number and size of the changes being made. 54. What are the different kinds of locks? Ans.General t ...
original - Kansas State University
... search-key values in the file. An ideal hash function is uniform, i.e., each bucket is assigned the same number of search-key values from the set of all possible values. Ideal hash function is random, so each bucket will have the same number of records assigned to it irrespective of the actual d ...
... search-key values in the file. An ideal hash function is uniform, i.e., each bucket is assigned the same number of search-key values from the set of all possible values. Ideal hash function is random, so each bucket will have the same number of records assigned to it irrespective of the actual d ...
Chapter 1: Introduction
... 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 ...
Chapter 19
... flushed to the database disk under WAL before it commits. For this reason the recovery manager undoes all transactions during recovery. No transaction is redone. It is possible that a transaction might have completed execution and ready to commit but this transaction is also undone. Copyright © 2007 ...
... flushed to the database disk under WAL before it commits. For this reason the recovery manager undoes all transactions during recovery. No transaction is redone. It is possible that a transaction might have completed execution and ready to commit but this transaction is also undone. Copyright © 2007 ...
INT7016 – Contemporary Issues in Database Development
... DBWR manages the database buffer cache so that user processes can always find free buffers as needed.(picture) The DBWR Process Writes all changed (modified) data buffers to the appropriate data files Uses an LRU algorithm to keep the most recently used data blocks in memory while aging out the ...
... DBWR manages the database buffer cache so that user processes can always find free buffers as needed.(picture) The DBWR Process Writes all changed (modified) data buffers to the appropriate data files Uses an LRU algorithm to keep the most recently used data blocks in memory while aging out the ...
What is JDBC Driver
... To use the standard JDBC package, which allows you to select, insert, update, and delete data in SQL tables, add the following imports to your source code: importjava.sql.*;// forstandard JDBC programs importjava.math.*;// for BigDecimal and BigInteger support ...
... To use the standard JDBC package, which allows you to select, insert, update, and delete data in SQL tables, add the following imports to your source code: importjava.sql.*;// forstandard JDBC programs importjava.math.*;// for BigDecimal and BigInteger support ...
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. ...
Evolution Database Maintenance Guide
... 4. Check the required options in the backup database screen: a. Database: Select the database that you are going to take backup. b. Recovery model: The full recovery model is the most complete recovery model and allows you to recover all of your data to any point in time as long as all backup files ...
... 4. Check the required options in the backup database screen: a. Database: Select the database that you are going to take backup. b. Recovery model: The full recovery model is the most complete recovery model and allows you to recover all of your data to any point in time as long as all backup files ...
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. ...
Week 2 - Conceptual Database Design
... rather than as separate ellipses in E-R diagrams. ! Binary relationship sets are represented in UML by just drawing a line connecting the entity sets. The relationship set name is written adjacent to the line. ! The role played by an entity set in a relationship set may also be specified by writin ...
... rather than as separate ellipses in E-R diagrams. ! Binary relationship sets are represented in UML by just drawing a line connecting the entity sets. The relationship set name is written adjacent to the line. ! The role played by an entity set in a relationship set may also be specified by writin ...