Ch23b_Views
... Maintenance policy: Controls when we do refresh. Immediate: As part of the transaction that modifies the underlying data tables. (+ Materialized view is always consistent; - updates are slowed) Deferred: Some time later, in a separate transaction. (- View becomes inconsistent; + can scale to mai ...
... Maintenance policy: Controls when we do refresh. Immediate: As part of the transaction that modifies the underlying data tables. (+ Materialized view is always consistent; - updates are slowed) Deferred: Some time later, in a separate transaction. (- View becomes inconsistent; + can scale to mai ...
Working with DB2 UDB data
... A binary string is a sequence of bytes. Binary strings include varying-length strings of type BLOB(n), which are used to hold nontraditional data such as pictures, voice, or mixed media, and which can also hold structured data for user-defined types and user-defined functions. • Binary large object, ...
... A binary string is a sequence of bytes. Binary strings include varying-length strings of type BLOB(n), which are used to hold nontraditional data such as pictures, voice, or mixed media, and which can also hold structured data for user-defined types and user-defined functions. • Binary large object, ...
Relational Database Definitions 9/16/13 Relational model
... • ISBN# in books is related to the ISBN# in written by and published by – a specific ISBN# value in one relation refers to the same book as the ISBN# in the other relation ...
... • ISBN# in books is related to the ISBN# in written by and published by – a specific ISBN# value in one relation refers to the same book as the ISBN# in the other relation ...
Working with Data and ADO.Net
... RowState Property • RowState ( DataRowState Enumerator type ) has following values – Added ( a DataRow object that is added to DataSet) – Deleted ( a DataRow object that is deleted in DataSet) – Detached ( a DataRow object that is instantiated but not added to the DataSet ) – Modified ( a DataRow o ...
... RowState Property • RowState ( DataRowState Enumerator type ) has following values – Added ( a DataRow object that is added to DataSet) – Deleted ( a DataRow object that is deleted in DataSet) – Detached ( a DataRow object that is instantiated but not added to the DataSet ) – Modified ( a DataRow o ...
Material Revision Lecture - Computer Science
... Information system and its functions (functions define operations on information!) Other defs: Database, DBMS, Application Program, etc. TPM (Transaction Processing Monitor) – def, understand its role, functions, ... Transactions (ACID), ... Concurrency Control Service Etc,… ...
... Information system and its functions (functions define operations on information!) Other defs: Database, DBMS, Application Program, etc. TPM (Transaction Processing Monitor) – def, understand its role, functions, ... Transactions (ACID), ... Concurrency Control Service Etc,… ...
Introduction to Database Management
... Her business is in selling products to the attendees at her seminars. She would like to develop a database to keep track of customers, the seminars that they have attended, and the purchases that they have made. Please determine the entities, attributes and relationships that should exist in the dat ...
... Her business is in selling products to the attendees at her seminars. She would like to develop a database to keep track of customers, the seminars that they have attended, and the purchases that they have made. Please determine the entities, attributes and relationships that should exist in the dat ...
- Sacramento - California State University
... using some conditions. Figuring out aggregated values to be shown, such as protein sequence, gene location, gene and then figure out the ‘by’ condition that drives the design of star schema. It is important to note that in star schema, every dimension will have a primary key and dimension table will ...
... using some conditions. Figuring out aggregated values to be shown, such as protein sequence, gene location, gene and then figure out the ‘by’ condition that drives the design of star schema. It is important to note that in star schema, every dimension will have a primary key and dimension table will ...
Data Persistence and Object-Relational Mapping 1
... The Data Mapper converts a n-to-1 association to a foreign key relation (persist) or foreign key to object (retrieve). ...
... The Data Mapper converts a n-to-1 association to a foreign key relation (persist) or foreign key to object (retrieve). ...
Concurrency Control
... Allow people to lock at each level, but with a special protocol using new “intention” locks: ...
... Allow people to lock at each level, but with a special protocol using new “intention” locks: ...
Lecture Notes (6up)
... The Data Mapper converts a n-to-1 association to a foreign key relation (persist) or foreign key to object (retrieve). ...
... The Data Mapper converts a n-to-1 association to a foreign key relation (persist) or foreign key to object (retrieve). ...
PPT - Electrical and Computer Engineering Department
... Database System Concepts, 6th Ed. ©Silberschatz, Korth and Sudarshan See www.db-book.com for conditions on re-use ...
... Database System Concepts, 6th Ed. ©Silberschatz, Korth and Sudarshan See www.db-book.com for conditions on re-use ...
Last saved 27 September 2004
... written into the database correctly. The Database Key screen lists the database ID code, subject name, session number, and session date for all subjects and sessions in the database. This is useful to create a key tying the subject names to their database codes. The Query Database screen lists all s ...
... written into the database correctly. The Database Key screen lists the database ID code, subject name, session number, and session date for all subjects and sessions in the database. This is useful to create a key tying the subject names to their database codes. The Query Database screen lists all s ...
Document
... Mapplet is a set of transformations that you build in the mapplet designer and you can use in multiple mappings. 15)What is meant by grain? Granularity of data is a very important factor in the design of fact table. In fact table, we can represent data at different atomic levels, called grains. ...
... Mapplet is a set of transformations that you build in the mapplet designer and you can use in multiple mappings. 15)What is meant by grain? Granularity of data is a very important factor in the design of fact table. In fact table, we can represent data at different atomic levels, called grains. ...
Introduction to SQL
... With parentheses, you can override normal precedence rules. In this case parentheses make the OR take place before the AND. ...
... With parentheses, you can override normal precedence rules. In this case parentheses make the OR take place before the AND. ...
AutoPart: Automating Schema Design for Large Scientific Databases
... since accessing the large base tables (even through nonclustered indexes) is prohibitively expensive. Large numbers of covering indexes are expensive to store and maintain, as data columns from the base table are replicated multiple times in the index set. Adding multiple indexes to multi-terabyte s ...
... since accessing the large base tables (even through nonclustered indexes) is prohibitively expensive. Large numbers of covering indexes are expensive to store and maintain, as data columns from the base table are replicated multiple times in the index set. Adding multiple indexes to multi-terabyte s ...
Database Design Document Template
... Architects, whose overall architecture must meet the requirements specified in this document. Designers, whose design must meet the requirements specified in this document. Programmers, whose software must implement the requirements specified in this document. Testers, whose test cases must validate ...
... Architects, whose overall architecture must meet the requirements specified in this document. Designers, whose design must meet the requirements specified in this document. Programmers, whose software must implement the requirements specified in this document. Testers, whose test cases must validate ...
Logical Standby – Setup
... Logical Standby – 2nd solution Using the logical standby technology, the development schemas and production schemas are within the same database without possibility of leakage onto the production database. ...
... Logical Standby – 2nd solution Using the logical standby technology, the development schemas and production schemas are within the same database without possibility of leakage onto the production database. ...
ODI ST Partnership
... The following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The ...
... The following is intended to outline our general product direction. It is intended for information purposes only, and may not be incorporated into any contract. It is not a commitment to deliver any material, code, or functionality, and should not be relied upon in making purchasing decisions. The ...
Web Page re-Ranking System for Library
... Web Page re-Ranking System for Library Abstract: Many online or local data sources provide powerful querying mechanisms but limited ranking capabilities. For instance, PubMed allows users to submit highly expressive Boolean keyword queries, but ranks the query results by date only. However, a user w ...
... Web Page re-Ranking System for Library Abstract: Many online or local data sources provide powerful querying mechanisms but limited ranking capabilities. For instance, PubMed allows users to submit highly expressive Boolean keyword queries, but ranks the query results by date only. However, a user w ...
Parallel Query Processing in Shared Disk Database Systems
... the network, while SD would require moving large q uantities of data. TI1is argument apparently assumes conventional (non-parallel) database processing because efficient intra-query parallelism for SN requires redistribution of large amounts of data berween nodes (see section 3). Furthermore, SN is ...
... the network, while SD would require moving large q uantities of data. TI1is argument apparently assumes conventional (non-parallel) database processing because efficient intra-query parallelism for SN requires redistribution of large amounts of data berween nodes (see section 3). Furthermore, SN is ...
Algebraic Optimization of Computations over Scientific Databases
... must find a set of physical algorithms that can implement or execute each expression. This process proceeds through the application of implementation rules to the logical expressions. Each rule translates one or more logical operators into one or more physical operators (algorithms). For instance, a ...
... must find a set of physical algorithms that can implement or execute each expression. This process proceeds through the application of implementation rules to the logical expressions. Each rule translates one or more logical operators into one or more physical operators (algorithms). For instance, a ...
What is a Database
... select account.balance from depositor, account where depositor.customer_id = ‘192-83-7465’ and depositor.account_number = account.account_number ...
... select account.balance from depositor, account where depositor.customer_id = ‘192-83-7465’ and depositor.account_number = account.account_number ...
Migrating to Azure SQL Database Tips, Tricks and Lessons Learned
... “SSDT uses the most recent compatibility rules to detect SQL Database V12 incompatibilities. If incompatibilities are detected, you can fix detected issues directly in this tool. This is currently the recommended method to test and fix SQL Database V12 ...
... “SSDT uses the most recent compatibility rules to detect SQL Database V12 incompatibilities. If incompatibilities are detected, you can fix detected issues directly in this tool. This is currently the recommended method to test and fix SQL Database V12 ...
Veco Admin Guides - Power Grid - veco
... Veco Administration Guides – Power Grids Query Conditions Due to the inbuilt “Veco” security, every query, regardless of which database is being queried, MUST contain a reference to a “CompanyID” in the “WHERE” statement. When writing “Veco” queries this must take the form: WHERE CompanyFK=’{Compan ...
... Veco Administration Guides – Power Grids Query Conditions Due to the inbuilt “Veco” security, every query, regardless of which database is being queried, MUST contain a reference to a “CompanyID” in the “WHERE” statement. When writing “Veco” queries this must take the form: WHERE CompanyFK=’{Compan ...