Chapter 4: SQL
... Delete the record of all accounts with balances below the average at the bank. DELETE FROM account WHERE balance < (SELECT AVG (balance) FROM account) NOTE: First, compute avg balance and find all tuples to delete and delete them, without recomputing the avg as you do so. ...
... Delete the record of all accounts with balances below the average at the bank. DELETE FROM account WHERE balance < (SELECT AVG (balance) FROM account) NOTE: First, compute avg balance and find all tuples to delete and delete them, without recomputing the avg as you do so. ...
Language Integrated Query: An introduction
... •Only defines query, not update or context LINQ To SQL •Mapping is set at compile time •Can not mix mapped and unmapped properties in a single query •Microsoft SQL Server 2000, 2005 only ...
... •Only defines query, not update or context LINQ To SQL •Mapping is set at compile time •Can not mix mapped and unmapped properties in a single query •Microsoft SQL Server 2000, 2005 only ...
DBaaS Cloud Capacity Planning
... look at the workload of a Virtual Machine to create relationship patterns of workloads to understand how resources are being utilised, analysing the actual query being executed to predict if and when it is likely to exhaust resources available. There seems to be a consensus among several academics ( ...
... look at the workload of a Virtual Machine to create relationship patterns of workloads to understand how resources are being utilised, analysing the actual query being executed to predict if and when it is likely to exhaust resources available. There seems to be a consensus among several academics ( ...
Migrating to Virtual Data Marts using Data Virtualization
... Degrading Data Quality – Duplicating data never improves the data quality. In fact, it increases the risk that data quality degrades. Storing data in a data warehouse and in multiple data marts implies that programs are invoked periodically to keep all these databases up to date. If a new data val ...
... Degrading Data Quality – Duplicating data never improves the data quality. In fact, it increases the risk that data quality degrades. Storing data in a data warehouse and in multiple data marts implies that programs are invoked periodically to keep all these databases up to date. If a new data val ...
UNIVERSITY OF NAIROBI GIS DATABASE FOR REAL ESTATE MANAGEMENT
... Real Estate Management involves house owners, tenants, tax collectors, valuers, financial institutions, mortgage providers among others. Estate Agents deal with massive datasets from these key actors together with data from the houses and their attributes. It has been difficult to manage these datas ...
... Real Estate Management involves house owners, tenants, tax collectors, valuers, financial institutions, mortgage providers among others. Estate Agents deal with massive datasets from these key actors together with data from the houses and their attributes. It has been difficult to manage these datas ...
A Survey of Schema Evolution in Object
... Future database systems should be able to deal with changes in the real world. Objectoriented database systems are regarded as promising future database systems to support highlevel data abstractions. Changes in the real world can be reflected as the evolution of objectoriented databases. Database e ...
... Future database systems should be able to deal with changes in the real world. Objectoriented database systems are regarded as promising future database systems to support highlevel data abstractions. Changes in the real world can be reflected as the evolution of objectoriented databases. Database e ...
Oracle Apps DBA - Software Contractors` Guild
... Performed database related activities: troubleshooting, recovery, tuning of the database, user security, RDBMS software installation and upgrades, resolving Oracle errors and failures, auditing activities, and resource utilization. Participated in semi-annual disaster recovery tests and make recomme ...
... Performed database related activities: troubleshooting, recovery, tuning of the database, user security, RDBMS software installation and upgrades, resolving Oracle errors and failures, auditing activities, and resource utilization. Participated in semi-annual disaster recovery tests and make recomme ...
2 Overview of the DB2 Environment
... it represents one or several physical files or drives on the computer system. The database, as a container of pages of data, sets the physical size allocated in the system and manages main memory through the use of buffer pools. Since most database courses only covers single database access this is ...
... it represents one or several physical files or drives on the computer system. The database, as a container of pages of data, sets the physical size allocated in the system and manages main memory through the use of buffer pools. Since most database courses only covers single database access this is ...
Normalization
... 564 got changed to Database Management. How many times do you have to make this change in the COURSE table in its current form? COURSE# ...
... 564 got changed to Database Management. How many times do you have to make this change in the COURSE table in its current form? COURSE# ...
disk i/o`s - Progress Community
... (most of the time) keyset/sensitive scrollable cursors will retrieve all keys to the client, then each fetch (next) will result in an execute ...
... (most of the time) keyset/sensitive scrollable cursors will retrieve all keys to the client, then each fetch (next) will result in an execute ...
SQL Server 2000 OLTP best practices
... Worse performance on 64-bit vs. 32-bit platform Worse performance on SQL 2005 vs. SQL 2000 ...
... Worse performance on 64-bit vs. 32-bit platform Worse performance on SQL 2005 vs. SQL 2000 ...
An Introduction to the Source Code of the Pyrrho DBMS
... Pyrrho automatically maintains a full history for all data. No data is ever lost. Deleted or modified data can always be recovered if required. This information is available to applications through the use of some additional system tables (See Chapter 8), and it is also possible to examine a databas ...
... Pyrrho automatically maintains a full history for all data. No data is ever lost. Deleted or modified data can always be recovered if required. This information is available to applications through the use of some additional system tables (See Chapter 8), and it is also possible to examine a databas ...
Database Compiler Concepts - University of Connecticut
... is Allowed if Attributes are in Different Relations In Those Cases, Query Must Qualify by Prefixing the Relation Name to the Attribute Name EMPLOYEE.LNAME, DEPARTMENT.DNAME Aliases: When Queries Must Refer to the Same Relation Twice Alias is Akin to a Variable – Reference in PL! In These Situa ...
... is Allowed if Attributes are in Different Relations In Those Cases, Query Must Qualify by Prefixing the Relation Name to the Attribute Name EMPLOYEE.LNAME, DEPARTMENT.DNAME Aliases: When Queries Must Refer to the Same Relation Twice Alias is Akin to a Variable – Reference in PL! In These Situa ...
gsl.azurewebsites.net
... Shuffle phase: each node sends its fragments to the other nodes (it keeps one for itself) Combine phase: each node combines the fragments it receives into a single temporary table ...
... Shuffle phase: each node sends its fragments to the other nodes (it keeps one for itself) Combine phase: each node combines the fragments it receives into a single temporary table ...
Administering Websense Databases
... When you fingerprint data, the fingerprints are stored in the Data Security Fingerprint Database on the TRITON management server and pushed to other Data Security components for fast analysis on those machines. To tune performance, you can configure the disk space and cache size of the database on t ...
... When you fingerprint data, the fingerprints are stored in the Data Security Fingerprint Database on the TRITON management server and pushed to other Data Security components for fast analysis on those machines. To tune performance, you can configure the disk space and cache size of the database on t ...
Action Queries
... You can insert the field names and corresponding values in any order, but … The names specified before the VALUES clause and the corresponding values following the VALUES clause must be in the same order! ...
... You can insert the field names and corresponding values in any order, but … The names specified before the VALUES clause and the corresponding values following the VALUES clause must be in the same order! ...
PowerCenter Connect for Hyperion Essbase 8.1.1 User Guide
... Connect for Hyperion Essbase supports read/write access to Essbase data by making calls to the Hyperion Essbase Server. It access data from the Hyperion Essbase Server on the fly and does not require additional disk storage area for multidimensional data retrieved. It also allows dynamic building of ...
... Connect for Hyperion Essbase supports read/write access to Essbase data by making calls to the Hyperion Essbase Server. It access data from the Hyperion Essbase Server on the fly and does not require additional disk storage area for multidimensional data retrieved. It also allows dynamic building of ...
Title of Course
... Null values are the “absence of information”. They are logical values and represent “not/available” …or… “not/applicable” status for a field If you accept the default setting for SQL nulls as generated by the Data Access wizard, EGL internally maintains a null indicator for each variable that has th ...
... Null values are the “absence of information”. They are logical values and represent “not/available” …or… “not/applicable” status for a field If you accept the default setting for SQL nulls as generated by the Data Access wizard, EGL internally maintains a null indicator for each variable that has th ...
Abstract
... A weak connectivity networking model can be accommodated only with weakly consistent, replicated data. Replication is required since a single storage site may not be reachable from mobile clients or within disconnected workgroups. Weak consistency is desired since any replication scheme providing on ...
... A weak connectivity networking model can be accommodated only with weakly consistent, replicated data. Replication is required since a single storage site may not be reachable from mobile clients or within disconnected workgroups. Weak consistency is desired since any replication scheme providing on ...
Management Information Systems 6/e
... databases, row numbers are irrelevant In databases, columns have logical names such as Order Date and Customer Name Data dictionary – contains the logical structure of the information in a database ...
... databases, row numbers are irrelevant In databases, columns have logical names such as Order Date and Customer Name Data dictionary – contains the logical structure of the information in a database ...
Vblock Specialized Systems for High Performance Databases
... response times. The system is pre-designed, pre-configured, pre-installed, pre-tuned, and pre-tested by expert database architects at VCE before delivery to the customer. Once it hits the customer floor, this product is ready for deployment—lowering the TCO by saving the customer months of internal ...
... response times. The system is pre-designed, pre-configured, pre-installed, pre-tuned, and pre-tested by expert database architects at VCE before delivery to the customer. Once it hits the customer floor, this product is ready for deployment—lowering the TCO by saving the customer months of internal ...
Data Page Layouts for Relational Databases on Deep Memory
... sequential traversals through parts of the relation that are not referenced. The paradox occurs because (a) the item that the query processing algorithm requests and the transfer unit between the memory and the processor are not the same size, and (b) the data placement scheme used stores data in a ...
... sequential traversals through parts of the relation that are not referenced. The paradox occurs because (a) the item that the query processing algorithm requests and the transfer unit between the memory and the processor are not the same size, and (b) the data placement scheme used stores data in a ...
Interaction Data Service
... There is one other error log level, which enables you to create log files that don't override each other every time the maximum log file size limit is reached. This logging level is designed for diagnostic purposes only and can be achieved by adding 128 to one of the logging level values mentioned a ...
... There is one other error log level, which enables you to create log files that don't override each other every time the maximum log file size limit is reached. This logging level is designed for diagnostic purposes only and can be achieved by adding 128 to one of the logging level values mentioned a ...