2515 - Distributed Databases
... the local indexes stored at each site take up far less memory (1) • queries are processed locally(1) this speeds up searches as only the required data is retrieved from the central location (1) • less data traffic than complete centralisation (1) as only data is sent and not the additional informati ...
... the local indexes stored at each site take up far less memory (1) • queries are processed locally(1) this speeds up searches as only the required data is retrieved from the central location (1) • less data traffic than complete centralisation (1) as only data is sent and not the additional informati ...
Resume - Rahul Budholiya
... Unique presentation on Complicated Declaration in C with less known facts. http://www.slideshare.net/rahulbudholiya/complicated-declarations-in-c ...
... Unique presentation on Complicated Declaration in C with less known facts. http://www.slideshare.net/rahulbudholiya/complicated-declarations-in-c ...
Database Technology for Bioinformatics
... But Relational databases are not very good at representing hierarchical aspects of the real world. It also typically requires many tables to represent a data enevironment. ! Object-oriented databases are typically more flexible, but there are not many standard comercial products available Hierarch ...
... But Relational databases are not very good at representing hierarchical aspects of the real world. It also typically requires many tables to represent a data enevironment. ! Object-oriented databases are typically more flexible, but there are not many standard comercial products available Hierarch ...
Index Fragmentation
... 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 a table, organized in a specific way to allow for faster retri ...
... 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 a table, organized in a specific way to allow for faster retri ...
Remote-Backup
... Shadow Paging Shadow paging is an alternative to log-based recovery; this scheme is ...
... Shadow Paging Shadow paging is an alternative to log-based recovery; this scheme is ...
Basics on Geodatabases - UN-GGIM
... Software designed to efficiently administer one or more database(s). In action, users rarely distinguish between a “DBMS” and “database”. Examples you may be familiar with include Microsoft Access and ArcGIS. ...
... Software designed to efficiently administer one or more database(s). In action, users rarely distinguish between a “DBMS” and “database”. Examples you may be familiar with include Microsoft Access and ArcGIS. ...
Remote Backup Systems
... Shadow Paging Shadow paging is an alternative to log-based recovery; this scheme is ...
... Shadow Paging Shadow paging is an alternative to log-based recovery; this scheme is ...
Lecture 1- Query Processing
... Can implement selections of the form AV (r) or A V(r) by using a linear file scan, or by using indices in the following ways: A5 (primary index, comparison). (Relation is sorted on A) For A V(r) use index to find first tuple v and scan relation sequentially from there For AV (r) just ...
... Can implement selections of the form AV (r) or A V(r) by using a linear file scan, or by using indices in the following ways: A5 (primary index, comparison). (Relation is sorted on A) For A V(r) use index to find first tuple v and scan relation sequentially from there For AV (r) just ...
DavidShaoChapter3Fall2003CS157B
... machine code Discovered about 100 machine code fragments were sufficient. Not too much impact on users when interactive queries were compiled and not interpreted. ...
... machine code Discovered about 100 machine code fragments were sufficient. Not too much impact on users when interactive queries were compiled and not interpreted. ...
Introduction to Data Base Management Systems and MS Access
... having the same set of fields is a “table” Depending on how you view it (there are several ways) a table looks a lot like a worksheet in Excel It has rows (records) that represent entities It has columns (fields) that represent pieces of ...
... having the same set of fields is a “table” Depending on how you view it (there are several ways) a table looks a lot like a worksheet in Excel It has rows (records) that represent entities It has columns (fields) that represent pieces of ...
PowerPoint 97
... • NULL (a value does not need to be specified) • NOT NULL (a value must be specified) • IDENTITY: sequential, unique numbering. identity(seed,increment) CREATE TABLE table_name( Column_name int identity(1,1) ) ...
... • NULL (a value does not need to be specified) • NOT NULL (a value must be specified) • IDENTITY: sequential, unique numbering. identity(seed,increment) CREATE TABLE table_name( Column_name int identity(1,1) ) ...
ADO.NET - Radford University
... Dataset Disadvantages • Because dataset data are disconnected from regular database, only optimistic locking can be used when updating the regular database with the dataset • In the case of conflict, either the dataset must be reprocessed or the data change must be forced onto the database, causing ...
... Dataset Disadvantages • Because dataset data are disconnected from regular database, only optimistic locking can be used when updating the regular database with the dataset • In the case of conflict, either the dataset must be reprocessed or the data change must be forced onto the database, causing ...
Chapter 6 Physical Design
... value allowances) for foreign-key to primarykey match-ups Sarbanes-Oxley Act (SOX) legislates importance of financial data integrity ...
... value allowances) for foreign-key to primarykey match-ups Sarbanes-Oxley Act (SOX) legislates importance of financial data integrity ...
Level 3 Unit 20 Database software
... the software tools and functions involved will be complex and at times require new learning, which will involve having the idea that there may be a tool or function to do something (e.g. improve efficiency or create an effect), exploring technical support, self-teaching and applying; and ...
... the software tools and functions involved will be complex and at times require new learning, which will involve having the idea that there may be a tool or function to do something (e.g. improve efficiency or create an effect), exploring technical support, self-teaching and applying; and ...
No Slide Title
... Enter data directly into the computer database or move data from paper forms into the computer database as close to the data collection time as possible. When you define a variable in a computer database, you specify both its format and its domain or range of allowed values. Using these format and d ...
... Enter data directly into the computer database or move data from paper forms into the computer database as close to the data collection time as possible. When you define a variable in a computer database, you specify both its format and its domain or range of allowed values. Using these format and d ...
Chapter 10
... • A foreign key allows Visual Basic to link (or join) two tables from a relational database • When the two tables Cities and Countries from Megacities.accdb are joined based on the foreign key Cities.country, the result is the table in the next slide. • The record for each city is expanded to show i ...
... • A foreign key allows Visual Basic to link (or join) two tables from a relational database • When the two tables Cities and Countries from Megacities.accdb are joined based on the foreign key Cities.country, the result is the table in the next slide. • The record for each city is expanded to show i ...
Judul - Binus Repository
... • Record: a row in a table • Field name: the heading of a column in a table • Entity-relationship diagrams (ERDs) express the relationships between entities • Cardinality of a relationship refers to the number of one entity that is related to another entity ...
... • Record: a row in a table • Field name: the heading of a column in a table • Entity-relationship diagrams (ERDs) express the relationships between entities • Cardinality of a relationship refers to the number of one entity that is related to another entity ...
Database Foundations – Course Description
... terminology, as well as data modeling concepts, building Entity Relationship Diagrams (ERDs), and mapping ERDs. Oracle SQL Developer Data Modeler is utilized to build ERDs and The Structured Query Language (SQL) is used to interact with a relational database and manipulate date within the database. ...
... terminology, as well as data modeling concepts, building Entity Relationship Diagrams (ERDs), and mapping ERDs. Oracle SQL Developer Data Modeler is utilized to build ERDs and The Structured Query Language (SQL) is used to interact with a relational database and manipulate date within the database. ...
Key eXtremeDB® Embedded Database Features
... (2-safe) and asynchronous (1-safe) replication, with automatic failover. With 2-safe replication, a timecognizant two-phase commit protocol gracefully handles timeout situations. ACID Transactions eXtremeDB’s transactions support the ACID (Atomic, Consistent, Isolated and Durable) principles, which ...
... (2-safe) and asynchronous (1-safe) replication, with automatic failover. With 2-safe replication, a timecognizant two-phase commit protocol gracefully handles timeout situations. ACID Transactions eXtremeDB’s transactions support the ACID (Atomic, Consistent, Isolated and Durable) principles, which ...
data entries
... records. So, better than Alternative 1 with large data records, especially if search keys are small. (Portion of index structure used to direct search, which depends on size of data entries, is much smaller than with Alternative 1.) Alternative 3 more compact than Alternative 2, but leads to variabl ...
... records. So, better than Alternative 1 with large data records, especially if search keys are small. (Portion of index structure used to direct search, which depends on size of data entries, is much smaller than with Alternative 1.) Alternative 3 more compact than Alternative 2, but leads to variabl ...
CHAPTER 2: DATA MINING USING P
... rows. They are not usually evaluated with respect to the individual transactions that contributed to the rule. Information on individual customers and their transactions that would make record-retrieval relevant is often not available or not of interest. Lazy kerneldensity-based classifiers that ar ...
... rows. They are not usually evaluated with respect to the individual transactions that contributed to the rule. Information on individual customers and their transactions that would make record-retrieval relevant is often not available or not of interest. Lazy kerneldensity-based classifiers that ar ...
Generic Information Builders` Presentation Template
... create indexes or other tuning structures, thereby delaying access to data. In addition, indexes significantly slow data-loading operations and increase the size of the database, sometimes by a factor of 2x. 2. Loss of data and time fidelity: IT generally performs ETL operations in batch mode during ...
... create indexes or other tuning structures, thereby delaying access to data. In addition, indexes significantly slow data-loading operations and increase the size of the database, sometimes by a factor of 2x. 2. Loss of data and time fidelity: IT generally performs ETL operations in batch mode during ...