SQL - Electrical and Computer Engineering Department
... History IBM Sequel language developed as part of System R project at the ...
... History IBM Sequel language developed as part of System R project at the ...
Document
... join algorithm on the local partitions ri and s of r and s to produce a partition of the final result of the hash-join. Note: Hash-join optimizations can be applied to the parallel case ...
... join algorithm on the local partitions ri and s of r and s to produce a partition of the final result of the hash-join. Note: Hash-join optimizations can be applied to the parallel case ...
Second Normal Form - Department of Computer Science
... PDT is a superkey, and FD is a superkey. Is PDT a candidate key? PD is not a superkey, nor is DT, nor is PT. So, PDT is a candidate key. FD is also a candidate key, since neither F or D ...
... PDT is a superkey, and FD is a superkey. Is PDT a candidate key? PD is not a superkey, nor is DT, nor is PT. So, PDT is a candidate key. FD is also a candidate key, since neither F or D ...
Oracle9i
... If redo log file has higher SCN, changes are reapplied to the data file from the redo log file ...
... If redo log file has higher SCN, changes are reapplied to the data file from the redo log file ...
Updating Legacy Databases through Wrappers: Data Consistency
... unforeseen contexts, such as Web-based applications or federated systems. Data wrappers, and more specifically updating wrappers (that not only access legacy data but also update them), can provide external clients of an existing (legacy) database with a neutral interface and augmented capabilities. ...
... unforeseen contexts, such as Web-based applications or federated systems. Data wrappers, and more specifically updating wrappers (that not only access legacy data but also update them), can provide external clients of an existing (legacy) database with a neutral interface and augmented capabilities. ...
Proceedings of USITS ’03: 4th USENIX Symposium on Internet Technologies and Systems
... Second, the computational cost of read queries is typically much larger than that of update queries. A typical update query consists of updating a single record selected by an equality test on a customer name or a product identifier. In contrast, read queries may involve complex search criteria invo ...
... Second, the computational cost of read queries is typically much larger than that of update queries. A typical update query consists of updating a single record selected by an equality test on a customer name or a product identifier. In contrast, read queries may involve complex search criteria invo ...
User`s Guide to iHTML Extensions 2.1
... (a) Dedicated Use - INLINE INTERNET SYSTEMS, INC. grants you the right to use the enclosed Inline Internet Systems, Inc. software program (the "SOFTWARE") on a single computer ("DEDICATED COMPUTER"). You may transfer the SOFTWARE to another single computer, PROVIDED you do so no more often than once ...
... (a) Dedicated Use - INLINE INTERNET SYSTEMS, INC. grants you the right to use the enclosed Inline Internet Systems, Inc. software program (the "SOFTWARE") on a single computer ("DEDICATED COMPUTER"). You may transfer the SOFTWARE to another single computer, PROVIDED you do so no more often than once ...
SQL: Queries, Programming, Triggers
... Find the sid of sailors who’ve reserved a red boat and a green boat SELECT S.sid FROM Sailors AS S, Boats AS B1, Reserves AS R1, Boats AS B2, Reserves AS R2 WHERE S.sid=R1.sid AND R1.bid=B1.bid AND S.sid=R2.sid AND R2.bid=B2.bid AND (B1.color=‘red’ AND B2.color=‘green’) OR SELECT S.sid FROM Sailors ...
... Find the sid of sailors who’ve reserved a red boat and a green boat SELECT S.sid FROM Sailors AS S, Boats AS B1, Reserves AS R1, Boats AS B2, Reserves AS R2 WHERE S.sid=R1.sid AND R1.bid=B1.bid AND S.sid=R2.sid AND R2.bid=B2.bid AND (B1.color=‘red’ AND B2.color=‘green’) OR SELECT S.sid FROM Sailors ...
File Organization
... Presently, the common secondary storage media used to store data are disk and tape. Tape is generally used for archival data. The storage medium used in a disk is a disk pack. It is made up of number of surfaces. Data is read and written from the disk pack by means of transducers called read/write h ...
... Presently, the common secondary storage media used to store data are disk and tape. Tape is generally used for archival data. The storage medium used in a disk is a disk pack. It is made up of number of surfaces. Data is read and written from the disk pack by means of transducers called read/write h ...
Data Sources, Exchange Formats, and Database Schemas
... The research described in this Thesis is part of a project to develop a new database system for proteo-chemometric research. This new system uses a mediator/wrapper approach for integrating heterogeneous and autonomous data sources. Special-purpose modules for data representation and data analysis c ...
... The research described in this Thesis is part of a project to develop a new database system for proteo-chemometric research. This new system uses a mediator/wrapper approach for integrating heterogeneous and autonomous data sources. Special-purpose modules for data representation and data analysis c ...
HP Vertica Analytics Platform 7.0.x Concepts Guide
... HP Vertica's unique approach to failure recovery is based on the distributed nature of a database. An HP Vertica database is said to be K-safe if any node can fail at any given time without causing the database to shut down. When the lost node comes back online and rejoins the database, it recovers ...
... HP Vertica's unique approach to failure recovery is based on the distributed nature of a database. An HP Vertica database is said to be K-safe if any node can fail at any given time without causing the database to shut down. When the lost node comes back online and rejoins the database, it recovers ...
Using Hibernate for Persistent Objects
... (domain) objects to the Hibernate persistent bean Java code and finally, to the database tables and columns (shown in Figure 5.2). This naming approach makes our job easier in two ways. First, we don’t need to think about the naming convention for each layer, and second, it reduces the amount of map ...
... (domain) objects to the Hibernate persistent bean Java code and finally, to the database tables and columns (shown in Figure 5.2). This naming approach makes our job easier in two ways. First, we don’t need to think about the naming convention for each layer, and second, it reduces the amount of map ...
SQL QUERY EVALUATION
... Some ways of computing a result require more CPU and memory resources than others ¤ Becomes especially important in concurrent usage scenarios ...
... Some ways of computing a result require more CPU and memory resources than others ¤ Becomes especially important in concurrent usage scenarios ...
Title
... OBS supports two kind of integration with external application: Database interface way, API connection way. This document details out Database interface way integration. ...
... OBS supports two kind of integration with external application: Database interface way, API connection way. This document details out Database interface way integration. ...
ODB Training 2005
... Create database using the following simple command : simulobs2odb –l MYDB –i hdr.txt –i body.txt As a result of these commands, a small database called MYDB has been created and it contains one data pool with two tables hdr and body, which are linked (related) to each other via special @LINK d ...
... Create database using the following simple command : simulobs2odb –l MYDB –i hdr.txt –i body.txt As a result of these commands, a small database called MYDB has been created and it contains one data pool with two tables hdr and body, which are linked (related) to each other via special @LINK d ...
CS122_SUMMER_2009_LECTURE_09a
... VALUES(7, 'Kung Fu Panda', '2008-06-06', 'G', 92, 'USA', 'English', (SELECT CompanyID FROM Companies WHERE Name = 'Dreamworks Pictures')); ...
... VALUES(7, 'Kung Fu Panda', '2008-06-06', 'G', 92, 'USA', 'English', (SELECT CompanyID FROM Companies WHERE Name = 'Dreamworks Pictures')); ...
Chapter 19: Distributed Databases
... Persistent messaging systems are systems that provide transactional properties to messages ...
... Persistent messaging systems are systems that provide transactional properties to messages ...
jayavel - Berkeley Database Research
... • Existing data and applications – XML applications have to inter-operate with existing relational data and applications – Not enough incentive to move all existing business applications to XML database systems • Remember object-oriented database systems? ...
... • Existing data and applications – XML applications have to inter-operate with existing relational data and applications – Not enough incentive to move all existing business applications to XML database systems • Remember object-oriented database systems? ...
SAP HANA SPS 09 - What`s New? SAP HANA Multitenant Database
... the software runs on a server, serving multiple tenants. A tenant is a group of users sharing the same view on a software they use. With a multitenant architecture, a software application is designed to provide every tenant a dedicated share of the instance including its data, configuration, user ma ...
... the software runs on a server, serving multiple tenants. A tenant is a group of users sharing the same view on a software they use. With a multitenant architecture, a software application is designed to provide every tenant a dedicated share of the instance including its data, configuration, user ma ...