PPT-Database Recovery Database System Implementation CSE 507

Some slides adapted from Navathe et Al Silberchatz et Al and Hector GarciaMolina Dr Hao Hua Chu from NTU Introduction and Basic Concepts Purpose of Database Recovery To bring the database into the last consistent state which existed prior to the failure. Jose M. Peña. jose.m.pena@liu.se. 2. How can several users access and update the database at the same time ? . Real . world. Model. Database. system. Physical . database . Database. management. system. Guide to Oracle 10g. 1. Objectives. Define database . a. dministration.. Understand . database administration . tasks.. Perform . database administration tasks using Oracle . 11. g . Enterprise . Manager.. Enterprise Resource Planning Systems. Objectives for Chapter 11. Understand the general functionality and key elements of ERP systems.. Understand the various aspects of ERP configurations including servers, databases, and the use of bolt-on software.. Introduction . Backup and recovery procedures protect your database against data loss and reconstruct the data, should loss occur. . The reconstructing of data is achieved through media recovery, which refers to the various operations involved in restoring, rolling forward, and rolling back a backup of database files.. Database Recovery. 1 Purpose of Database Recovery. To bring the database into the last consistent state, which existed prior to the failure.. To preserve transaction properties (Atomicity, Consistency, Isolation and Durability).. Database System Implementation CSE 507. Some slides adapted from . Navathe. et. Al. and . Silberchatz. et. Al. . Transaction Concept. A . transaction. . is a . unit . of program execution that accesses and possibly updates various data items.. The Database Environment and Development Process. Modern Database Management. 12. th. Edition. Jeff Hoffer, Ramesh . Venkataraman. , . Heikki. . Topi. . Definitions. Database: organized collection of logically related data. Management System . Presented by. Jayesh Kawli. Introduction. D. istributed . database system . with . combination . of technologies from . Amazon Dynamo and Google . BigTable . 1 Purpose of Database Recovery. To bring the database into the last consistent state, which existed prior to the failure.. To preserve transaction properties (Atomicity, Consistency, Isolation and Durability).. Yan Cui. ITK478. Position paper. Issues in enterprises. “…. organizations merge or takeover since the existing systems have been designed for different corporate needs, the resulting enterprise will have to face information inconsistency, heterogeneity and incompatible overlap”. . Introduction. Recovery algorithms. Recovery concepts. Write-ahead logging. In-place versus shadow updates. Rollback. Deferred update. Immediate update. Certain recovery techniques best used with specific concurrency control methods. Modern Database Management. 12. th. Edition. Jeff Hoffer, Ramesh . Venkataraman. , . Heikki. . Topi. . Objectives / . Self-study outline. Define . terms (Slides #3-6). Name limitations of conventional file . and. Performance . Analysis. Laureando:. Valerio Barbagallo. Relatore:. Paolo Merialdo. Correlatore:. Michele Aiello. Context. A . database. is a structured collection of data. A . database management system. Some slides adapted from . Navathe. et. Al. . Introduction to Database Security. Threats to databases. Loss of . integrity. Loss of . availability. Loss of . confidentiality. . To protect databases against these types of threats four kinds of countermeasures can be implemented:.