Corporate PPT Template
... view the contents of a table as it existed at some point in the recent past(UNDO_RETENTION). The feature allows the DBA to see the value of a column as of a specific time, as long as the before-image copy of the block is available in the undo segment ...
... view the contents of a table as it existed at some point in the recent past(UNDO_RETENTION). The feature allows the DBA to see the value of a column as of a specific time, as long as the before-image copy of the block is available in the undo segment ...
Database - bYTEBoss
... – The database is then in the same consistent state as it was at the point when the transaction log was backed up for the very last time – When you recover a database using a Full Database Backup, SQL Server 2005 first reconstructs all database files in the correct locations and then the system reco ...
... – The database is then in the same consistent state as it was at the point when the transaction log was backed up for the very last time – When you recover a database using a Full Database Backup, SQL Server 2005 first reconstructs all database files in the correct locations and then the system reco ...
slides
... Before a change is made to the database, the corresponding log entry is forced to a safe location. (WAL protocol; OS support for this is often inadequate.) After a crash, the effects of partially executed transactions are undone using the log. (Thanks to WAL, if log entry wasn’t saved before the cra ...
... Before a change is made to the database, the corresponding log entry is forced to a safe location. (WAL protocol; OS support for this is often inadequate.) After a crash, the effects of partially executed transactions are undone using the log. (Thanks to WAL, if log entry wasn’t saved before the cra ...
Corporate PPT Template - Universidad Nacional De Colombia
... view the contents of a table as it existed at some point in the recent past(UNDO_RETENTION). The feature allows the DBA to see the value of a column as of a specific time, as long as the before-image copy of the block is available in the undo segment ...
... view the contents of a table as it existed at some point in the recent past(UNDO_RETENTION). The feature allows the DBA to see the value of a column as of a specific time, as long as the before-image copy of the block is available in the undo segment ...
Databases and Data Warehouses: Building Business Intelligence
... Then, you need to have the right IT tools to define and analyse relationships within the collected information. People (knowledge workers) use IT tools (databases, database management systems (DBMSs), data warehouse and data-mining tools) to create BI from information. This is what analytics is ...
... Then, you need to have the right IT tools to define and analyse relationships within the collected information. People (knowledge workers) use IT tools (databases, database management systems (DBMSs), data warehouse and data-mining tools) to create BI from information. This is what analytics is ...
Data Resource Management
... – Do you believe this stifles innovative thinking, causing companies to become too constrained by the data they are already collecting to think about unexplored opportunities? ...
... – Do you believe this stifles innovative thinking, causing companies to become too constrained by the data they are already collecting to think about unexplored opportunities? ...
What is a database?
... Must not break referential integrity. Must still be valid after transaction ...
... Must not break referential integrity. Must still be valid after transaction ...
ISY 4340 Class Introduction
... responsible for the overall management of data resources in an organization, including maintaining corporate-wide definitions and standards Database Administration: A technical function that is responsible for physical database design and for dealing with technical issues such as security enforcem ...
... responsible for the overall management of data resources in an organization, including maintaining corporate-wide definitions and standards Database Administration: A technical function that is responsible for physical database design and for dealing with technical issues such as security enforcem ...
UNDERSTANDING DATABASE DESIGN for Beginners
... • An logical entity (or physical table) is in first normal form if there are no attributes (fields) that can have more than one value for a single instance (record). • An logical entity (or physical table) is in second normal form if it is already in first normal form and if the values of all non-pr ...
... • An logical entity (or physical table) is in first normal form if there are no attributes (fields) that can have more than one value for a single instance (record). • An logical entity (or physical table) is in second normal form if it is already in first normal form and if the values of all non-pr ...
Chapter 1
... The main components of the database system The main functions of a database management system ...
... The main components of the database system The main functions of a database management system ...
Fundamentals of Database Systems
... Whenever a person or group of persons need to access a database system, the individual or group must first apply for a user account. The DBA will then create a new account number and password for the user if there is a legitimate need to access the database. The user must log in to the DBMS by enter ...
... Whenever a person or group of persons need to access a database system, the individual or group must first apply for a user account. The DBA will then create a new account number and password for the user if there is a legitimate need to access the database. The user must log in to the DBMS by enter ...
Database Tables and Normalization
... • Normalized (decomposed) tables require additional processing, reducing system speed. • Normalization purity is often difficult to sustain in the modern database environment. The conflict between design efficiency, information requirements, and processing speed are often resolved through compromise ...
... • Normalized (decomposed) tables require additional processing, reducing system speed. • Normalization purity is often difficult to sustain in the modern database environment. The conflict between design efficiency, information requirements, and processing speed are often resolved through compromise ...
Midterm Exam Chapters 1,2,3,5, 6,7 (closed book)
... Chapter 1: Introduction to Database Systems • Why use a DBMS ? • What is a data model ? • 3-layer architecture: physical schema, conceptual schema, views • Concurrency control and transaction processing ...
... Chapter 1: Introduction to Database Systems • Why use a DBMS ? • What is a data model ? • 3-layer architecture: physical schema, conceptual schema, views • Concurrency control and transaction processing ...
comp4_unit6b_lecture_transcript
... ultimately be carried out in the real, physical world of a DBMS. Not all DBMSs are created equal. The design may have to be adjusted to meet the physical limitations of the DBMS. These adjustments should be kept to a minimum however so as to retain as much of the design as possible. Slide 14 Once th ...
... ultimately be carried out in the real, physical world of a DBMS. Not all DBMSs are created equal. The design may have to be adjusted to meet the physical limitations of the DBMS. These adjustments should be kept to a minimum however so as to retain as much of the design as possible. Slide 14 Once th ...
Database Management - Courses - University of California, Berkeley
... Database Management -- R. Larson ...
... Database Management -- R. Larson ...
Fundamentals of Database Systems
... OQL is DMG’s query language OQL works closely with programming languages such as C++ Embedded OQL statements return objects that are compatible with the type system of the host language OQL’s syntax is similar to SQL with additional features for objects Elmasri/Navathe, Fundamentals of Database ...
... OQL is DMG’s query language OQL works closely with programming languages such as C++ Embedded OQL statements return objects that are compatible with the type system of the host language OQL’s syntax is similar to SQL with additional features for objects Elmasri/Navathe, Fundamentals of Database ...
CO7107 Data warehouse
... This specialized software introduces the term database management system (DBMS) which is used to describe the application suite which administers and manages the database. Within the database, software tools are principally employed for the: storing, indexing, modification, retrieval, transitioning, ...
... This specialized software introduces the term database management system (DBMS) which is used to describe the application suite which administers and manages the database. Within the database, software tools are principally employed for the: storing, indexing, modification, retrieval, transitioning, ...
Database Systems: Design, Implementation, and Management Ninth
... • A job – such as accountant or sales representative -- can be assigned to many employees. (For example, one would reasonably assume that a store can have more than one sales representative. Therefore, the job title “Sales Representative” can be assigned to more than one employee at a time.) Each em ...
... • A job – such as accountant or sales representative -- can be assigned to many employees. (For example, one would reasonably assume that a store can have more than one sales representative. Therefore, the job title “Sales Representative” can be assigned to more than one employee at a time.) Each em ...
Document
... Ensuring durability is the responsibility of a component of the database system called the recovery-management component. ...
... Ensuring durability is the responsibility of a component of the database system called the recovery-management component. ...
Managing Databases with Binary Large Objects
... decisions made at the physical database design phase can improve database performance in the long run, tuning of database systems is an essential process in achieving satisfactory performance. This paper describes different approaches to organizing both database storage and physical schema that, in ...
... decisions made at the physical database design phase can improve database performance in the long run, tuning of database systems is an essential process in achieving satisfactory performance. This paper describes different approaches to organizing both database storage and physical schema that, in ...
Managing Databases with Binary Large Objects
... decisions made at the physical database design phase can improve database performance in the long run, tuning of database systems is an essential process in achieving satisfactory performance. This paper describes different approaches to organizing both database storage and physical schema that, in ...
... decisions made at the physical database design phase can improve database performance in the long run, tuning of database systems is an essential process in achieving satisfactory performance. This paper describes different approaches to organizing both database storage and physical schema that, in ...