Index Fragmentation
... all of these values, so 750 bytes read per second on average. End-user Response Time – A numerical measurement describing the amount of time that passes before something is presented to the entity making the request. Index – An object within a SQL Server database that contains references to data on ...
... all of these values, so 750 bytes read per second on average. End-user Response Time – A numerical measurement describing the amount of time that passes before something is presented to the entity making the request. Index – An object within a SQL Server database that contains references to data on ...
BWDB2UG March 8 2017 DB2 11 and 12 Performance and Availability
... With every new release of DB2 we look to see what features will allow us to improve the capabilities and performance of our existing applications as well as the availability of our data. We also have to plan to utilize new features in our development efforts. This presentation takes a look at the fe ...
... With every new release of DB2 we look to see what features will allow us to improve the capabilities and performance of our existing applications as well as the availability of our data. We also have to plan to utilize new features in our development efforts. This presentation takes a look at the fe ...
Curriculum Vitae
... Senior Application Developer Developed Centralized System and their MIS for Pakistan Post Office. System have the following module Pakistan Military Pension System, Electronic Monday Order System, Utility Bills System Using C#,WPF,MVVM,ASP.NET Web Form & MVC, Entity Framework, TFS,SVN,SQL Server 201 ...
... Senior Application Developer Developed Centralized System and their MIS for Pakistan Post Office. System have the following module Pakistan Military Pension System, Electronic Monday Order System, Utility Bills System Using C#,WPF,MVVM,ASP.NET Web Form & MVC, Entity Framework, TFS,SVN,SQL Server 201 ...
Return - Department of Computer Science
... 1. Breakdown protein into fragments called peptide using a protease enzyme 2. Identify protein by using a mass-spectrometer to measure the mass-charge ratio of the fragments and comparing the experiment result to a database of precomputed spectra. ...
... 1. Breakdown protein into fragments called peptide using a protease enzyme 2. Identify protein by using a mass-spectrometer to measure the mass-charge ratio of the fragments and comparing the experiment result to a database of precomputed spectra. ...
Module 1: Introduction
... (select customer-name,account-number from depositor, inserted where inserted.account-number = depositor.account-number) insert into loan values (inserted.account-number, inserted.branch-name, – inserted.balance) update account set balance = 0 from account, inserted where account.account-number = ins ...
... (select customer-name,account-number from depositor, inserted where inserted.account-number = depositor.account-number) insert into loan values (inserted.account-number, inserted.branch-name, – inserted.balance) update account set balance = 0 from account, inserted where account.account-number = ins ...
ppt - Avi Silberschatz
... (select customer-name,account-number from depositor, inserted where inserted.account-number = depositor.account-number) insert into loan values (inserted.account-number, inserted.branch-name, – inserted.balance) update account set balance = 0 from account, inserted where account.account-number = ins ...
... (select customer-name,account-number from depositor, inserted where inserted.account-number = depositor.account-number) insert into loan values (inserted.account-number, inserted.branch-name, – inserted.balance) update account set balance = 0 from account, inserted where account.account-number = ins ...
Lecture X - Integrity Constrains
... (select customer-name,account-number from depositor, inserted where inserted.account-number = depositor.account-number) insert into loan values (inserted.account-number, inserted.branch-name, – inserted.balance) update account set balance = 0 from account, inserted where account.account-number = ins ...
... (select customer-name,account-number from depositor, inserted where inserted.account-number = depositor.account-number) insert into loan values (inserted.account-number, inserted.branch-name, – inserted.balance) update account set balance = 0 from account, inserted where account.account-number = ins ...
Referential Integrity
... (inserted.account-number, inserted.branch-name, – inserted.balance) update account set balance = 0 from account, inserted where account.account-number = inserted.account-number end ...
... (inserted.account-number, inserted.branch-name, – inserted.balance) update account set balance = 0 from account, inserted where account.account-number = inserted.account-number end ...
Chapter 6: Integrity and Security Domain Constraints
... (select customer-name,account-number from depositor, inserted where inserted.account-number = depositor.account-number) insert into loan values (inserted.account-number, inserted.branch-name, – inserted.balance) update account set balance = 0 from account, inserted where account.account-number = ins ...
... (select customer-name,account-number from depositor, inserted where inserted.account-number = depositor.account-number) insert into loan values (inserted.account-number, inserted.branch-name, – inserted.balance) update account set balance = 0 from account, inserted where account.account-number = ins ...
Chapter 14: Query Optimization
... 5. Theta-join operations (and natural joins) are commutative. E1 E2 = E2 E1 6. (a) Natural join operations are associative: (E1 ...
... 5. Theta-join operations (and natural joins) are commutative. E1 E2 = E2 E1 6. (a) Natural join operations are associative: (E1 ...
original - Kansas State University
... Case Statement for Conditional Updates Same query as before: Increase all accounts with balances over $10,000 by 6%, all other accounts receive 5%. update account set balance = case when balance <= 10000 then balance *1.05 else balance * 1.06 end ...
... Case Statement for Conditional Updates Same query as before: Increase all accounts with balances over $10,000 by 6%, all other accounts receive 5%. update account set balance = case when balance <= 10000 then balance *1.05 else balance * 1.06 end ...
INTRODUCTION TO COMPUTER APPLICATIONS
... Remark: If you want the Rental ID to start with 10001 (instead of 1) go to the design view and enter \10000 in the Format section of the Field properties part, for the Rental ID field. 11. Now we will create a Query. Click on the Query button, select ‘Create Query in Design View’. In the Show Table ...
... Remark: If you want the Rental ID to start with 10001 (instead of 1) go to the design view and enter \10000 in the Format section of the Field properties part, for the Rental ID field. 11. Now we will create a Query. Click on the Query button, select ‘Create Query in Design View’. In the Show Table ...
Chapter 6 Database and Data Mining Security
... y The integrity of database elements is their correctness or accuracy. y This corrective action can be taken in three ways . y Field checks - activities that test for appropriate values in a position. y Access control y A change log - A change log lists every change made to the database; it contains ...
... y The integrity of database elements is their correctness or accuracy. y This corrective action can be taken in three ways . y Field checks - activities that test for appropriate values in a position. y Access control y A change log - A change log lists every change made to the database; it contains ...
Main Responsibilities
... for Fundraising Team activities. 5. To help improve efficiencies in the Fundraising Team by supporting the development of Anthony Nolan’s databases to meet the continually evolving needs of the user, including inputting into the testing of any database upgrades. 6. To ensure that data from fundraisi ...
... for Fundraising Team activities. 5. To help improve efficiencies in the Fundraising Team by supporting the development of Anthony Nolan’s databases to meet the continually evolving needs of the user, including inputting into the testing of any database upgrades. 6. To ensure that data from fundraisi ...
Data Modeling - Liberty University
... Generalization occurs when two or more entities represent categories of the same realworld object. For example, Wages_Employees and Classified_Employees represent categories of the same entity, Employees. In this example, Employees would be the supertype; Wages_Employees and Classified_Employees wou ...
... Generalization occurs when two or more entities represent categories of the same realworld object. For example, Wages_Employees and Classified_Employees represent categories of the same entity, Employees. In this example, Employees would be the supertype; Wages_Employees and Classified_Employees wou ...
Recovery Tuning
... Write the logs of multiple transactions in batch Need to use a “log buffer” (another thing to tune!) Better throughput if many concurrent short update transactions Longer response time for individual transactions ...
... Write the logs of multiple transactions in batch Need to use a “log buffer” (another thing to tune!) Better throughput if many concurrent short update transactions Longer response time for individual transactions ...
Irwin/McGraw-Hill - Binus Repository
... • A good data model is simple – The data attributes that describe an entity should describe only that entity ...
... • A good data model is simple – The data attributes that describe an entity should describe only that entity ...
Week 5 Lab Guide - Computing at Queen`s
... Project Management application. In particular being able to query the database for data already held, update this data and delete what we no longer need. We have also considered adding new data and realise that for most of these functions we need to be careful when using a relational database as the ...
... Project Management application. In particular being able to query the database for data already held, update this data and delete what we no longer need. We have also considered adding new data and realise that for most of these functions we need to be careful when using a relational database as the ...
Distributed Database
... issues. This is to be expected, they are Query As indicated above, Distribution there is a strong Reliability since together distributed affects Processing Design relationship between replication management protocols andproblem. The they usually called the transaction theare concurrency The design o ...
... issues. This is to be expected, they are Query As indicated above, Distribution there is a strong Reliability since together distributed affects Processing Design relationship between replication management protocols andproblem. The they usually called the transaction theare concurrency The design o ...
CMSC 414 Computer (and Network) Security
... Common source of flaws HTTP is stateless – State – whether per-session or across sessions – is often stored at the client side (i.e., cookies) – State is echoed back by client in future requests – This state is subject to manipulation! ...
... Common source of flaws HTTP is stateless – State – whether per-session or across sessions – is often stored at the client side (i.e., cookies) – State is echoed back by client in future requests – This state is subject to manipulation! ...
Data Resource Management
... Companies are increasingly adopting a position that data is an asset that must be managed with the same level of attention as that of cash and other capital. Using the Internet, ...
... Companies are increasingly adopting a position that data is an asset that must be managed with the same level of attention as that of cash and other capital. Using the Internet, ...
Physical Database Design and Performance
... All relevant modern DBMSs now have more sophisticated programming capabilities, such as case expressions, user-defined functions, and triggers, so that such logic can be available in the database for all users without application-specific programming. De-Normalizing & Partitioning Data Modern DB ...
... All relevant modern DBMSs now have more sophisticated programming capabilities, such as case expressions, user-defined functions, and triggers, so that such logic can be available in the database for all users without application-specific programming. De-Normalizing & Partitioning Data Modern DB ...
Data Warehousing
... simply do not map to the natural thinking processes of business users. It is unrealistic to expect business users to navigate through such data structures. If business users are expected to perform queries against the warehouse database on an ad hoc basis and if IT professionals want to remove thems ...
... simply do not map to the natural thinking processes of business users. It is unrealistic to expect business users to navigate through such data structures. If business users are expected to perform queries against the warehouse database on an ad hoc basis and if IT professionals want to remove thems ...
Database System
... Rigid data structure: If applications have to share files, the file structure that suits one application might not suit another Physical data dependency: If the structure of the data file needs to be changed in some way, this alteration will need to be reflected in all application programs that ...
... Rigid data structure: If applications have to share files, the file structure that suits one application might not suit another Physical data dependency: If the structure of the data file needs to be changed in some way, this alteration will need to be reflected in all application programs that ...
Relational model
The relational model for database management is an approach to managing data using a structure and language consistent with first-order predicate logic, first described in 1969 by Edgar F. Codd. In the relational model of a database, all data is represented in terms of tuples, grouped into relations. A database organized in terms of the relational model is a relational database.The purpose of the relational model is to provide a declarative method for specifying data and queries: users directly state what information the database contains and what information they want from it, and let the database management system software take care of describing data structures for storing the data and retrieval procedures for answering queries.Most relational databases use the SQL data definition and query language; these systems implement what can be regarded as an engineering approximation to the relational model. A table in an SQL database schema corresponds to a predicate variable; the contents of a table to a relation; key constraints, other constraints, and SQL queries correspond to predicates. However, SQL databases deviate from the relational model in many details, and Codd fiercely argued against deviations that compromise the original principles.