Middleware-based Database Replication: The Gaps
... applications generally avoid conflicting transactions, there are still significant research efforts trying to solve this problem in the replication middleware layer. The volume of update transactions, however, remains the limiting performance factor for such systems. As every replica has to perform ...
... applications generally avoid conflicting transactions, there are still significant research efforts trying to solve this problem in the replication middleware layer. The volume of update transactions, however, remains the limiting performance factor for such systems. As every replica has to perform ...
relational calculus
... creates a new relation, which is specified in terms of variables that range over rows of the stored database relations (in tuple calculus) or over columns of the stored relations (in domain calculus). ...
... creates a new relation, which is specified in terms of variables that range over rows of the stored database relations (in tuple calculus) or over columns of the stored relations (in domain calculus). ...
item_name, color, size
... It suffices to precompute some aggregates, and compute others on demand from one of the precomputed aggregates Can compute aggregate on (item_name, color) from an aggregate on (item_name, color, size) – For all but a few “non-decomposable” aggregates such as median ...
... It suffices to precompute some aggregates, and compute others on demand from one of the precomputed aggregates Can compute aggregate on (item_name, color) from an aggregate on (item_name, color, size) – For all but a few “non-decomposable” aggregates such as median ...
Designing Real-time Sensor Data Warehouse Architecture Using
... The simplest scenario is checking in a file (list.txt) and modifying it over time ...
... The simplest scenario is checking in a file (list.txt) and modifying it over time ...
90-728 Management Information Systems
... attached page has the E-R diagram, relational database model, and test data listings. The Access database incorporating the E-R diagram, relational database model and test data is called Trash99a.mdb and is available on l:\academic\90-728. All answers to this question should be printed on paper (not ...
... attached page has the E-R diagram, relational database model, and test data listings. The Access database incorporating the E-R diagram, relational database model and test data is called Trash99a.mdb and is available on l:\academic\90-728. All answers to this question should be printed on paper (not ...
Access Pattern Confidentiality-Preserving - CEUR
... computation. Oblivious RAM (ORAM) approaches [5, 9, 13, 4, 15] allow to store and retrieve records based on fixed identifiers and enforce pattern and access confidentiality by selectively retrieving, re-encrypting, and re-submitting specific parts of the outsourced database in an interactive way. Ho ...
... computation. Oblivious RAM (ORAM) approaches [5, 9, 13, 4, 15] allow to store and retrieve records based on fixed identifiers and enforce pattern and access confidentiality by selectively retrieving, re-encrypting, and re-submitting specific parts of the outsourced database in an interactive way. Ho ...
ch7
... Switchboard makes a database user friendly Splitting tables from objects simplifies upgrades Macros automate a command sequence AutoExec macro executes when database opens Unmatched query wizard finds records in one table without matching records in another table • Prototype demonstrates “look and f ...
... Switchboard makes a database user friendly Splitting tables from objects simplifies upgrades Macros automate a command sequence AutoExec macro executes when database opens Unmatched query wizard finds records in one table without matching records in another table • Prototype demonstrates “look and f ...
cos346day5
... DAVID M. KROENKE’S DATABASE PROCESSING, 10th Edition © 2006 Pearson Prentice Hall ...
... DAVID M. KROENKE’S DATABASE PROCESSING, 10th Edition © 2006 Pearson Prentice Hall ...
Unstructured Data Management with Oracle Database 12c
... managing large volumes of all forms of information. Databases are often used to catalog and reference documents, images and media content stored in files through “pointer-based” implementations. To store this unstructured data inside database tables, Binary Large Objects, or BLOBs have been availabl ...
... managing large volumes of all forms of information. Databases are often used to catalog and reference documents, images and media content stored in files through “pointer-based” implementations. To store this unstructured data inside database tables, Binary Large Objects, or BLOBs have been availabl ...
DBA Daily Checklist - How to Example Code
... D. Verify success of database backup E. Verify success of database archiving to tape F. Verify enough resources for acceptable performance 1. Verify free space in tablespaces. For each instance, verify that enough free space exists in each tablespace to handle the day’s expected growth. As of ...
... D. Verify success of database backup E. Verify success of database archiving to tape F. Verify enough resources for acceptable performance 1. Verify free space in tablespaces. For each instance, verify that enough free space exists in each tablespace to handle the day’s expected growth. As of
Spatial and spatio-temporal data models for GIS
... queries over large spatial datasets. • SDBMS may be used by applications other than GIS – Astronomy, Genomics, Multimedia information systems, ...
... queries over large spatial datasets. • SDBMS may be used by applications other than GIS – Astronomy, Genomics, Multimedia information systems, ...
Lecture Notes
... and make it available across the organization. Bottom Line: Many problems such as data redundancy, program-data dependence, inflexibility, poor data security, and inability to share data among applications have occurred with traditional file environments. Managers and workers must know and understan ...
... and make it available across the organization. Bottom Line: Many problems such as data redundancy, program-data dependence, inflexibility, poor data security, and inability to share data among applications have occurred with traditional file environments. Managers and workers must know and understan ...
Evolution of Database Technology
... It was shown that a high-level relational database query language could give performance comparable to the best record-oriented database systems. (!) ...
... It was shown that a high-level relational database query language could give performance comparable to the best record-oriented database systems. (!) ...
ppt - kaist
... Convenient for Web access to databases, because the Perl program can be run as CGI on the Web server system AW lecture notes Programming for WWW (Lecture#11) ...
... Convenient for Web access to databases, because the Perl program can be run as CGI on the Web server system AW lecture notes Programming for WWW (Lecture#11) ...
Query-aware Test Generation Using a Relational Constraint Solver
... Several approaches exist for automatic query generation. For example, RAGS [21] and QGen [20] stochastically combine SQL statements to generate valid queries. These tools enable generating thousands of SQL queries in a few seconds. A more recent approach [5] targets generating queries with cardinali ...
... Several approaches exist for automatic query generation. For example, RAGS [21] and QGen [20] stochastically combine SQL statements to generate valid queries. These tools enable generating thousands of SQL queries in a few seconds. A more recent approach [5] targets generating queries with cardinali ...
Improving Database Performance
... Improving Database Performance Client requests are automatically directed to the system which owns the particular resource Only one of the clustered systems can ‘own’ and access a particular resource at a time. When a failure occurs, resource ownership can be dynamically transferred to another syst ...
... Improving Database Performance Client requests are automatically directed to the system which owns the particular resource Only one of the clustered systems can ‘own’ and access a particular resource at a time. When a failure occurs, resource ownership can be dynamically transferred to another syst ...
Methods
... maintenance, education, and geographical information systems. Interesting aspect of multimedia documents: media objects can be distributed over computer networks. Authors can work in a collaborative manner to structure the data into a multimedia document. B. Prabhakaran ...
... maintenance, education, and geographical information systems. Interesting aspect of multimedia documents: media objects can be distributed over computer networks. Authors can work in a collaborative manner to structure the data into a multimedia document. B. Prabhakaran ...
data entries
... Search key is not the same as key (minimal set of fields that uniquely identify a record in a relation). ...
... Search key is not the same as key (minimal set of fields that uniquely identify a record in a relation). ...
Data Integration and Exchange - Informatics Homepages Server
... • A single large repository of data. • Database administrator in charge of access to data. • Users interact with the database through application programs. • Programmers write those (embedded SQL, other ways of combining general purpose programming languages and DBMSs) • Queries dominate; updates le ...
... • A single large repository of data. • Database administrator in charge of access to data. • Users interact with the database through application programs. • Programmers write those (embedded SQL, other ways of combining general purpose programming languages and DBMSs) • Queries dominate; updates le ...
UIC Data Conversion and Submission
... • Can be used to convert from three source database platforms: – MS Access (database) – Oracle (database/view) – SQL Server (database/view) ...
... • Can be used to convert from three source database platforms: – MS Access (database) – Oracle (database/view) – SQL Server (database/view) ...
entity set
... • An entity set that does not have a primary key is referred to as a weak entity set. • The existence of a weak entity set depends on the existence of a identifying entity set – It must relate to the identifying entity set via a total, one-to-many relationship set from the identifying to the weak en ...
... • An entity set that does not have a primary key is referred to as a weak entity set. • The existence of a weak entity set depends on the existence of a identifying entity set – It must relate to the identifying entity set via a total, one-to-many relationship set from the identifying to the weak en ...
doc - itk.ilstu.edu
... proprietary and therefore difficult to access. These days so may solutions for accessing data exist that there is rarely a problem when there is a need to retrieve information from or place it into any database. The solutions not only make application integration a much easier proposition, but they ...
... proprietary and therefore difficult to access. These days so may solutions for accessing data exist that there is rarely a problem when there is a need to retrieve information from or place it into any database. The solutions not only make application integration a much easier proposition, but they ...