Database Performance Study - Information Systems Department
... When a table is referenced in a database query and there is no index a table scan must be performed on that table. The larger the table the longer it would take for the table. However, if indexing is used an index scan would be performed. An index scan is much faster than a table scan. Indexed files ...
... When a table is referenced in a database query and there is no index a table scan must be performed on that table. The larger the table the longer it would take for the table. However, if indexing is used an index scan would be performed. An index scan is much faster than a table scan. Indexed files ...
Abstract - Logic Systems
... Modern scientific databases and web databases maintain large and heterogeneous data. These real-world databases contain hundreds or even thousands of relations and attributes. Traditional predefined query forms are not able to satisfy various ad-hoc queries from users on those databases. This paper ...
... Modern scientific databases and web databases maintain large and heterogeneous data. These real-world databases contain hundreds or even thousands of relations and attributes. Traditional predefined query forms are not able to satisfy various ad-hoc queries from users on those databases. This paper ...
RDF Parser/Serializer
... For authors willing to embed the structure data in web page Does not appear in browser Easier to extract data from web pages Ensures the intended meaning of document while converting ...
... For authors willing to embed the structure data in web page Does not appear in browser Easier to extract data from web pages Ensures the intended meaning of document while converting ...
Lecture 4
... 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 = inserted.account-number end ...
... 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 = inserted.account-number end ...
Estimating Statistical Aggregates on Probabilistic Data Streams
... Other aggregates such as MEDIAN, REPEAT-RATE, and DISTINCT have previously known algorithms for deterministic streams. A natural approach therefore would be to randomly instantiate multiple deterministic streams, apply standard stream algorithms and then apply a robust estimator. This approach works ...
... Other aggregates such as MEDIAN, REPEAT-RATE, and DISTINCT have previously known algorithms for deterministic streams. A natural approach therefore would be to randomly instantiate multiple deterministic streams, apply standard stream algorithms and then apply a robust estimator. This approach works ...
mod-19
... Queries/transactions execute in parallel with one another. Increases transaction throughput; used primarily to scale up a ...
... Queries/transactions execute in parallel with one another. Increases transaction throughput; used primarily to scale up a ...
OLAP in EPM 2007
... Connects to OLAP Datasource Creates Pivot Tables to consume OLAP data Contains a wealth of report formatting templates Can be setup by EPM Administrator or user Source of data and it’s maintenance do not concern the user Allows users to leverage their knowledge of excel to view and manip ...
... Connects to OLAP Datasource Creates Pivot Tables to consume OLAP data Contains a wealth of report formatting templates Can be setup by EPM Administrator or user Source of data and it’s maintenance do not concern the user Allows users to leverage their knowledge of excel to view and manip ...
Slide 1
... Establish performance baseline/metrics before upgrade Develop a test plan for database, applications, and reports Test upgraded database with applications and reports Ensure adequate performance by comparing metrics gathered before and after upgrade 8. Remediate regressions, e.g, tune queries, updat ...
... Establish performance baseline/metrics before upgrade Develop a test plan for database, applications, and reports Test upgraded database with applications and reports Ensure adequate performance by comparing metrics gathered before and after upgrade 8. Remediate regressions, e.g, tune queries, updat ...
Cloud-ready enterprise database
... physical data storage when needed and add additional database instances to service more active users and connections. This keeps the business growing fast without a loss in service levels. Elasticity addresses the ability to scale compute power, storage and database instances up or down as performan ...
... physical data storage when needed and add additional database instances to service more active users and connections. This keeps the business growing fast without a loss in service levels. Elasticity addresses the ability to scale compute power, storage and database instances up or down as performan ...
Document
... Queries/transactions execute in parallel with one another. Increases transaction throughput; used primarily to scale up a ...
... Queries/transactions execute in parallel with one another. Increases transaction throughput; used primarily to scale up a ...
Flexible Query Answering over Graph-modeled Data
... methodologically how different flexible query answering are solved. It allows us to avoid data transformations that bring unnecessary duplication and computational overhead. We also model uniformly our structured and semistructured data using graph databases so that FleQSy has the view of only one i ...
... methodologically how different flexible query answering are solved. It allows us to avoid data transformations that bring unnecessary duplication and computational overhead. We also model uniformly our structured and semistructured data using graph databases so that FleQSy has the view of only one i ...
Oracle Archive Log with Data Guard
... option it is attached here. Enter the User Name Enter the Password Click Test Credentials button and the following are ...
... option it is attached here. Enter the User Name Enter the Password Click Test Credentials button and the following are ...
Parallel Databases
... Queries/transactions execute in parallel with one another. Increases transaction throughput; used primarily to scale up a ...
... Queries/transactions execute in parallel with one another. Increases transaction throughput; used primarily to scale up a ...
cos346day21
... System Databases • Master – stores database information about other databases for a given instance of the SQL Server 2000. Also tracks disk space usage, configuration of the DBMS, and information on database objects. • Model – a database template that is copied whenever you create a new database. • ...
... System Databases • Master – stores database information about other databases for a given instance of the SQL Server 2000. Also tracks disk space usage, configuration of the DBMS, and information on database objects. • Model – a database template that is copied whenever you create a new database. • ...
Kroenke-Auer-DBP-e11-PPT
... Be prepared for problems after changes are made Maintain documentation ...
... Be prepared for problems after changes are made Maintain documentation ...
TRIGGER trigger_name
... VALUES (:new.emp_ssn, :new.emp_last_name,:new.emp_first_name, sysdate); ELSIF UPDATING('emp_salary') THEN INSERT INTO cemployee (emp_ssn, oldsalary, newsalary, up_date) VALUES (:old.emp_ssn,:old.emp_salary, :new.emp_salary, sysdate); ELSE INSERT INTO uemployee (emp_ssn, emp_address, up_date) VALUES ...
... VALUES (:new.emp_ssn, :new.emp_last_name,:new.emp_first_name, sysdate); ELSIF UPDATING('emp_salary') THEN INSERT INTO cemployee (emp_ssn, oldsalary, newsalary, up_date) VALUES (:old.emp_ssn,:old.emp_salary, :new.emp_salary, sysdate); ELSE INSERT INTO uemployee (emp_ssn, emp_address, up_date) VALUES ...
A Taste of SQL
... Language" and is pronounced "ess-que-ell" or "sequel". There are many commercial products that support SQL. Early SQL-based systems were written for mainframes and minicomputers. Recently there have been many news items announcing SQL-based products for microcomputers one can hardly read a trade rag ...
... Language" and is pronounced "ess-que-ell" or "sequel". There are many commercial products that support SQL. Early SQL-based systems were written for mainframes and minicomputers. Recently there have been many news items announcing SQL-based products for microcomputers one can hardly read a trade rag ...
PS1
... • Spherical/HTM (C# library + SQL glue) – Spatial index (Hierarchical Triangular Mesh) • Zones (SQL library) – Alternate spatial decomposition with dec zones • Many stored procedures and functions – From coordinate conversions to neighbor search functions • Self-extracting documentation (metadata) a ...
... • Spherical/HTM (C# library + SQL glue) – Spatial index (Hierarchical Triangular Mesh) • Zones (SQL library) – Alternate spatial decomposition with dec zones • Many stored procedures and functions – From coordinate conversions to neighbor search functions • Self-extracting documentation (metadata) a ...
2.0 The Background of Database Systems
... This segment proposes different architectures for database systems. The centralized, distributed, parallel, and web-based designs are presented each with its strengths and weaknesses and the concrete reasons for their selection. The segment recommends using web enabled centralized databases unless t ...
... This segment proposes different architectures for database systems. The centralized, distributed, parallel, and web-based designs are presented each with its strengths and weaknesses and the concrete reasons for their selection. The segment recommends using web enabled centralized databases unless t ...
Chapter 17: Parallel Databases
... Queries/transactions execute in parallel with one another. Increases transaction throughput; used primarily to scale up a ...
... Queries/transactions execute in parallel with one another. Increases transaction throughput; used primarily to scale up a ...
Technical Overview
... Place the Web server role on the same servers with the query role. There are two index partitions. For redundancy, a copy of each index partition (a index partition instance) is on each computer. ...
... Place the Web server role on the same servers with the query role. There are two index partitions. For redundancy, a copy of each index partition (a index partition instance) is on each computer. ...