Database System Architectures
... Implementation Issues for Distributed Databases Atomicity needed even for transactions that update data at multiple sites The two-phase commit protocol (2PC) is used to ensure atomicity ...
... Implementation Issues for Distributed Databases Atomicity needed even for transactions that update data at multiple sites The two-phase commit protocol (2PC) is used to ensure atomicity ...
BCS Higher Education Qualifications Professional Graduate Diploma
... The learner must have achieved the Diploma in IT or have an appropriate exemption to be entered for the Professional Graduate Diploma in IT. Candidates are required to become a member of BCS, The Chartered Institute for IT to sit and be awarded the qualifications. Candidates may apply for a four yea ...
... The learner must have achieved the Diploma in IT or have an appropriate exemption to be entered for the Professional Graduate Diploma in IT. Candidates are required to become a member of BCS, The Chartered Institute for IT to sit and be awarded the qualifications. Candidates may apply for a four yea ...
RFGex Prediction 2009 pt1
... NoSQL databases.” Brockmeier suggests that the “paper inspired, at least in part, Apache Cassandra, Voldemort, Riak and other projects.” According to Amazon CTO Werner Vogels, who co-authored the paper entitled Dynamo: Amazon’s Highly Available Key-value Store, “DynamoDB is based on the principles o ...
... NoSQL databases.” Brockmeier suggests that the “paper inspired, at least in part, Apache Cassandra, Voldemort, Riak and other projects.” According to Amazon CTO Werner Vogels, who co-authored the paper entitled Dynamo: Amazon’s Highly Available Key-value Store, “DynamoDB is based on the principles o ...
Lecture 1
... format) • Application development time can be reduced • Flexibility and maintainability • Availability of up-to date information • Economics of Scale (i.e., reducing overall costs of operations, sources and mgt) ...
... format) • Application development time can be reduced • Flexibility and maintainability • Availability of up-to date information • Economics of Scale (i.e., reducing overall costs of operations, sources and mgt) ...
From Feb 2008 – Sept 2009.
... S L K Software Pvt Ltd Oct 2009 to till date Software Languages : SQL Database : ORACLE 9i,10g O/s : OEL 5, Windows ...
... S L K Software Pvt Ltd Oct 2009 to till date Software Languages : SQL Database : ORACLE 9i,10g O/s : OEL 5, Windows ...
Client-server database systems and ODBC
... » Assume things will go wrong » Prevent problems all the time ...
... » Assume things will go wrong » Prevent problems all the time ...
Document
... – Data can be cached at client even in between transactions – But check that data is up-to-date before it is used (cache coherency) – Check can be done when requesting lock on data item • Lock Caching – Locks can be retained by client system even in between transactions – Transactions can acquire ca ...
... – Data can be cached at client even in between transactions – But check that data is up-to-date before it is used (cache coherency) – Check can be done when requesting lock on data item • Lock Caching – Locks can be retained by client system even in between transactions – Transactions can acquire ca ...
Resume - Trelco Limited Company
... Creation and maintenance of database, database entity included managing tablespaces and organising datafiles on servers and establishing appropriate security on those servers ...
... Creation and maintenance of database, database entity included managing tablespaces and organising datafiles on servers and establishing appropriate security on those servers ...
The Database Striptease and Informative Query Answers
... • At home we have – A distributed telephone database – Several electronic agenda databases – MP-3 databases of the boys – A large DVD database – Tens of photo databases – Insurance … ...
... • At home we have – A distributed telephone database – Several electronic agenda databases – MP-3 databases of the boys – A large DVD database – Tens of photo databases – Insurance … ...
Building and Deploying Web-Scale Social Networking Applications
... Replication is required to snapshot data from source database to client databases. For example, user data, including user_id, username, first name, main image, etc. are required on all distributed databases and applications. The main database is the master for the table, all other databases have a r ...
... Replication is required to snapshot data from source database to client databases. For example, user data, including user_id, username, first name, main image, etc. are required on all distributed databases and applications. The main database is the master for the table, all other databases have a r ...
Distributed Database System and Client/Server
... The sites in a distributed system should be autonomous. Local autonomous means that all operations at a given site are controlled by that site; No site X should depend on site Y for its successful operation Local data is locally owned and managed, with local accountability; all data “really” belongs ...
... The sites in a distributed system should be autonomous. Local autonomous means that all operations at a given site are controlled by that site; No site X should depend on site Y for its successful operation Local data is locally owned and managed, with local accountability; all data “really” belongs ...
Data Models
... Two-tier architecture: E.g. client programs using ODBC/JDBC to communicate with a database Three-tier architecture: E.g. web-based applications, and applications built using “middleware” ...
... Two-tier architecture: E.g. client programs using ODBC/JDBC to communicate with a database Three-tier architecture: E.g. web-based applications, and applications built using “middleware” ...
Centralized Systems
... are connected to one another if their binary representations differ in exactly one bit. n components are connected to log(n) other components and can reach each other via at most log(n) links; reduces communication ...
... are connected to one another if their binary representations differ in exactly one bit. n components are connected to log(n) other components and can reach each other via at most log(n) links; reduces communication ...
PowerPoint ******
... • The indexes in IMDBs are focused on reduced memory consumption and CPU cycles. • In the early 90's, Lehman and Carey proposed the T-tree as an index structure for main memory database. • The T-tree indexes are more efficient than B-trees in that they require less memory space and fewer CPU cycles. ...
... • The indexes in IMDBs are focused on reduced memory consumption and CPU cycles. • In the early 90's, Lehman and Carey proposed the T-tree as an index structure for main memory database. • The T-tree indexes are more efficient than B-trees in that they require less memory space and fewer CPU cycles. ...
Transaction Management
... • This serializes the same as T2 completed and then T1 • Either of these are acceptable • All we have to do is guarantee that our interleaved schedule is equivalent to some serial schedule, not a particular serial schedule • We do not care which customer gets the product as long as game is fair Copy ...
... • This serializes the same as T2 completed and then T1 • Either of these are acceptable • All we have to do is guarantee that our interleaved schedule is equivalent to some serial schedule, not a particular serial schedule • We do not care which customer gets the product as long as game is fair Copy ...
Introduction to Oracle
... Various standards have been developed for accessing database servers. Some of the important standards are ...
... Various standards have been developed for accessing database servers. Some of the important standards are ...
Database System (DBS)
... Microsoft offers SQL-Server, plus Microsoft Access for the cheap DBMS on the desktop, answered by “lite” systems from other competitors. Relational companies also challenged by “object-oriented DB” companies. But countered with “object-relational” systems, which retain the relational core while allo ...
... Microsoft offers SQL-Server, plus Microsoft Access for the cheap DBMS on the desktop, answered by “lite” systems from other competitors. Relational companies also challenged by “object-oriented DB” companies. But countered with “object-relational” systems, which retain the relational core while allo ...
Hailstorm Press Event template
... 6a. Secured database – database password Cause: An end-user has secured a database with login security Resolution: The person converting the database must have the necessary ...
... 6a. Secured database – database password Cause: An end-user has secured a database with login security Resolution: The person converting the database must have the necessary ...
Database Management System
... Users can specify some simple integrity constraints on the data, and the DBMS will enforce these constraints. Beyond this, the DBMS does not really understand the semantics of the data. (e.g., it does not understand how the interest on a bank account is computed). Thus, ensuring that a transaction ( ...
... Users can specify some simple integrity constraints on the data, and the DBMS will enforce these constraints. Beyond this, the DBMS does not really understand the semantics of the data. (e.g., it does not understand how the interest on a bank account is computed). Thus, ensuring that a transaction ( ...
File - My Digital Portfolio
... which copy of the information is the correct one. The previous user might have missed out a single piece of data or only updated one part of the data. An advantage of this particular database is that it’s easy to identify a method of contacting a customer using the primary key (CustID). This means t ...
... which copy of the information is the correct one. The previous user might have missed out a single piece of data or only updated one part of the data. An advantage of this particular database is that it’s easy to identify a method of contacting a customer using the primary key (CustID). This means t ...
Creating A Back-Up & Recovery Plan
... point where the database finishes. Backs up all tables, indexes, system tables and the database object in those tables ...
... point where the database finishes. Backs up all tables, indexes, system tables and the database object in those tables ...
Prince Sultan University - CS 340 Introduction to Database Systems
... Improve students’ design and implementation skills as well as presentation techniques. Work in a group in order to develop the sample database. ...
... Improve students’ design and implementation skills as well as presentation techniques. Work in a group in order to develop the sample database. ...
Advanced DB Tech
... Assess the limitations of relational databases; Assess different ways of extending the relational databases; Have mastered programming language extensions to SQL and the integration of SQL with programming languages; Explain, discuss and evaluate object-oriented databases; Compare and contrast the r ...
... Assess the limitations of relational databases; Assess different ways of extending the relational databases; Have mastered programming language extensions to SQL and the integration of SQL with programming languages; Explain, discuss and evaluate object-oriented databases; Compare and contrast the r ...
Lecture12 - The University of Texas at Dallas
... It can involve high-trust, high-security scenarios as well as ...
... It can involve high-trust, high-security scenarios as well as ...