CC 1 - CS-People by full name
... write(A) unlock(A) lock-X(A) read(A) write(A) unlock(A) lock-S(A) read(A)
T2, T3 need to be rolled back because T1 failed
...
... write(A) unlock(A) lock-X(A) read(A) write(A) unlock(A) lock-S(A) read(A)
Chapter 7
... Interactive processing: has replaced batch processing for most applications Users can now interact with data through terminals, viewing and changing values online in real-time. Batch processing is still used for jobs in which it makes sense to do a lot of transactions at once. ...
... Interactive processing: has replaced batch processing for most applications Users can now interact with data through terminals, viewing and changing values online in real-time. Batch processing is still used for jobs in which it makes sense to do a lot of transactions at once. ...
MIT Lincoln Laboratory
... Video monitoring in the UK – There are 14,000 CCTV cameras in London Underground and 400,000 in London – Total number of cameras in the UK is 4,000,000 (14 people per camera) – 24 x 7 video monitoring requires a lot of human resources for tape analysis – Only an attack justifies the number of people ...
... Video monitoring in the UK – There are 14,000 CCTV cameras in London Underground and 400,000 in London – Total number of cameras in the UK is 4,000,000 (14 people per camera) – 24 x 7 video monitoring requires a lot of human resources for tape analysis – Only an attack justifies the number of people ...
SelfStudy1 - Computing at Northumbria University
... type domains of the relational schema (domain calculus), or the set of all relations in the database (tuple calculus) can serve a model for it All meaningful sentences in the model are true or false, so the relation tuples can be interpreted as truthful facts describing the world The constraints des ...
... type domains of the relational schema (domain calculus), or the set of all relations in the database (tuple calculus) can serve a model for it All meaningful sentences in the model are true or false, so the relation tuples can be interpreted as truthful facts describing the world The constraints des ...
Oracle Data Guard 11g Release 2 with Oracle Enterprise
... Primary database: accessed by most applications, can be a single instance or RAC database Standby database: consistent copy of the primary database. Maintained automatically using redo data. Can be a single-instance or RAC database. ...
... Primary database: accessed by most applications, can be a single instance or RAC database Standby database: consistent copy of the primary database. Maintained automatically using redo data. Can be a single-instance or RAC database. ...
IBM DB2 for i indexing methods and strategies
... and easily understood by the reader, and then provides the pages numbers for this information so that the reader can go directly to the pages of interest. Without an index, the reader is instead required to read or scan each page of the book to locate the same information. Database indexes in relati ...
... and easily understood by the reader, and then provides the pages numbers for this information so that the reader can go directly to the pages of interest. Without an index, the reader is instead required to read or scan each page of the book to locate the same information. Database indexes in relati ...
- SlideBoom
... more complex report requirements. This lab may be completed using either DeVry’sOmnymbus EDUPE-APP lab environment, or a local copy of the MySQL database running on your own computer using the OM database tables. The lab will utilize a set of tables that are represented by the ERD (OM_ERD.docx) and ...
... more complex report requirements. This lab may be completed using either DeVry’sOmnymbus EDUPE-APP lab environment, or a local copy of the MySQL database running on your own computer using the OM database tables. The lab will utilize a set of tables that are represented by the ERD (OM_ERD.docx) and ...
Qt basic programming
... • A database is an integrated collection of logically related records or files which consolidates records into a common pool of data records that provides data for many applications. A database is a collection of information that is organized so that it can easily be accessed, managed, and updated. ...
... • A database is an integrated collection of logically related records or files which consolidates records into a common pool of data records that provides data for many applications. A database is a collection of information that is organized so that it can easily be accessed, managed, and updated. ...
Middle-Tier Database Caching for e-Business - Pages
... register, which indicates the user's tolerance for out-of-date data, and (3) any nicknames in the query. More specifically, if a statement is a UDI, auto-passthru sends it through to the remote server. I f a statement is a read-only query, auto-passthru examines the current value of REFRESH AGE to d ...
... register, which indicates the user's tolerance for out-of-date data, and (3) any nicknames in the query. More specifically, if a statement is a UDI, auto-passthru sends it through to the remote server. I f a statement is a read-only query, auto-passthru examines the current value of REFRESH AGE to d ...
Implementation Plan - Project Management
... 2.1.1 Alerts SVN URL should be latest tagged release from SVN, for example https://svn.ecdf.ed.ac.uk/repo/is/apps/alerts/tags/1.6.0.r17104/ . In order to grab the latest code for deployment you should point your SVN client to the repository location and export the code to your machine. From this poi ...
... 2.1.1 Alerts SVN URL should be latest tagged release from SVN, for example https://svn.ecdf.ed.ac.uk/repo/is/apps/alerts/tags/1.6.0.r17104/ . In order to grab the latest code for deployment you should point your SVN client to the repository location and export the code to your machine. From this poi ...
Rational ClearQuest Performance Improvement Rational Software Whitepaper
... example, if your environment needs to support users of the native Unix client for Rational ClearQuest, then you must write your hooks in perl, as VBScript is not supported in the Unix environment. Regardless of your chosen scripting language, keep in mind that when a user logs in to Rational ClearQu ...
... example, if your environment needs to support users of the native Unix client for Rational ClearQuest, then you must write your hooks in perl, as VBScript is not supported in the Unix environment. Regardless of your chosen scripting language, keep in mind that when a user logs in to Rational ClearQu ...
slides
... during that transaction are undone. That may not be what you want! – Suppose you want to add an audit record every time someone tries to make some specific kind of change. – You want to add that audit record even if the ...
... during that transaction are undone. That may not be what you want! – Suppose you want to add an audit record every time someone tries to make some specific kind of change. – You want to add that audit record even if the ...
SQL – the natural language for analysis
... is not equal to ‘CLERK’. Using the OR operator, only one of the conditions needs to return a true such that our query would return all the rows where the salary is between 10,000 and 25,000 or the job is not equal to ‘CLERK’. This means that clerks earning between 10,000 and 25,000 will be included ...
... is not equal to ‘CLERK’. Using the OR operator, only one of the conditions needs to return a true such that our query would return all the rows where the salary is between 10,000 and 25,000 or the job is not equal to ‘CLERK’. This means that clerks earning between 10,000 and 25,000 will be included ...
ADVANCED SQL AND PL/SQL TOPICS
... transactions and log off normally • Transactional - instance does not accept any new connections, and allows users to finish their current transaction • Immediate - instance does not accept any new user connections, and immediately terminates current user connections • Abort - immediately disconnect ...
... transactions and log off normally • Transactional - instance does not accept any new connections, and allows users to finish their current transaction • Immediate - instance does not accept any new user connections, and immediately terminates current user connections • Abort - immediately disconnect ...
HMDB: the Human Metabolome Database
... spectra are being added each month. The HMDB’s spectral search utilities allow both pure compounds and mixtures of compounds to be identified from their MS or NMR spectra via peak matching algorithms that were developed in-house. The NMR spectral matching algorithm uses a simple peak matching rule w ...
... spectra are being added each month. The HMDB’s spectral search utilities allow both pure compounds and mixtures of compounds to be identified from their MS or NMR spectra via peak matching algorithms that were developed in-house. The NMR spectral matching algorithm uses a simple peak matching rule w ...
Data Warehousing: the New Knowledge Management Architecture
... Historical dating systems encompass a number of different systems, including the western, Islamic, Revolutionary and Byzantine calendars. Historical data may refer to ‘the first Sunday after Michaelmas’, which would need calculations to be undertaken before a date can be entered into a database. Eve ...
... Historical dating systems encompass a number of different systems, including the western, Islamic, Revolutionary and Byzantine calendars. Historical data may refer to ‘the first Sunday after Michaelmas’, which would need calculations to be undertaken before a date can be entered into a database. Eve ...
relational_model
... Where do ICs Come From? ICs are based upon the semantics of the realworld enterprise that is being described in the database relations. We can check a database instance to see if an IC is violated, but we can NEVER infer that an IC is true by looking at an instance. ...
... Where do ICs Come From? ICs are based upon the semantics of the realworld enterprise that is being described in the database relations. We can check a database instance to see if an IC is violated, but we can NEVER infer that an IC is true by looking at an instance. ...
Chapter 1
... be stable over a long time period because the types of data that an organization stores over time are very stable. Also, a database designed with a data-driven approach will not have duplicate data stored—older, design-driven approaches often caused organizations to build information systems that co ...
... be stable over a long time period because the types of data that an organization stores over time are very stable. Also, a database designed with a data-driven approach will not have duplicate data stored—older, design-driven approaches often caused organizations to build information systems that co ...
Microsoft Office Access - MSC
... database engine by allowing an Access application to connect directly to the tables in a SQL Server database. ADPs will continue to be supported in Office Access 2007. To take maximum advantage of the new features in Office Access 2007, Microsoft recommends the use of linked tables to connect to SQL ...
... database engine by allowing an Access application to connect directly to the tables in a SQL Server database. ADPs will continue to be supported in Office Access 2007. To take maximum advantage of the new features in Office Access 2007, Microsoft recommends the use of linked tables to connect to SQL ...
Fundamentals of Database Systems
... S9. Conjunctive selection by intersection of record pointers: This method is possible if secondary indexes are available on all (or some of) the fields involved in equality comparison conditions in the conjunctive condition and if the indexes include record pointers (rather than block pointers). E ...
... S9. Conjunctive selection by intersection of record pointers: This method is possible if secondary indexes are available on all (or some of) the fields involved in equality comparison conditions in the conjunctive condition and if the indexes include record pointers (rather than block pointers). E ...
Fast Vertical Mining Using Diffsets
... at the same time. This can help in reducing the number of database scans. MaxMiner [4] is another algorithm for finding the maximal elements. It uses efficient pruning based on lookaheads to quickly narrow the search. DepthProject [2] finds long itemsets using a depth first search of a lexicographic ...
... at the same time. This can help in reducing the number of database scans. MaxMiner [4] is another algorithm for finding the maximal elements. It uses efficient pruning based on lookaheads to quickly narrow the search. DepthProject [2] finds long itemsets using a depth first search of a lexicographic ...
Dynamic load balancing in parallel database systems
... IBM's database systems (IMS, DB2) for parallel sysplex configurations. Oracle Parallel Server is available on many platforms, in particular on parallel computers (e.g., nCUBE) as well as on most "cluster" architectures (VaxCluster, Sequent, Pyramid, Encore, Sun, etc.). SE systems have the advantage ...
... IBM's database systems (IMS, DB2) for parallel sysplex configurations. Oracle Parallel Server is available on many platforms, in particular on parallel computers (e.g., nCUBE) as well as on most "cluster" architectures (VaxCluster, Sequent, Pyramid, Encore, Sun, etc.). SE systems have the advantage ...