DBMS
... Before reading/writing an object, a transaction requests a lock on the object, and waits till the DBMS gives it the lock. All locks are released at the end of the transaction. (Strict 2PL locking protocol.) Idea: If an action of Ti (say, writing X) affects Tj (which perhaps reads X), one of them, sa ...
... Before reading/writing an object, a transaction requests a lock on the object, and waits till the DBMS gives it the lock. All locks are released at the end of the transaction. (Strict 2PL locking protocol.) Idea: If an action of Ti (say, writing X) affects Tj (which perhaps reads X), one of them, sa ...
CS6302-DBMS_Notes - e
... •Security and integrity information. The conceptual level supports each external view. However, this level must not contain any storage dependent details. For instance, the description of an entity should contain only data types of attributes and their length, but not any storage consideration such ...
... •Security and integrity information. The conceptual level supports each external view. However, this level must not contain any storage dependent details. For instance, the description of an entity should contain only data types of attributes and their length, but not any storage consideration such ...
SQL Server DB Design Guidelines
... - Use existing storage for backups, etc. - The hot ticket are these on 2 redundant servers, for all storage, and then put SQL 2k8 EE, maybe using built-in compression, and synchronous mirroring, on the (x64) system(s). Update: I/we installed a 320 GB card on each of two 8x, x64, 64GB SQL 2k5 StdEd, ...
... - Use existing storage for backups, etc. - The hot ticket are these on 2 redundant servers, for all storage, and then put SQL 2k8 EE, maybe using built-in compression, and synchronous mirroring, on the (x64) system(s). Update: I/we installed a 320 GB card on each of two 8x, x64, 64GB SQL 2k5 StdEd, ...
Analytical databases
... organization could be divided into three categories: operational decisions within the scope of days or weeks; tactical decisions, whose effects range from a few months to one year, strategic decisions, which impact the organization development for the next few years. ...
... organization could be divided into three categories: operational decisions within the scope of days or weeks; tactical decisions, whose effects range from a few months to one year, strategic decisions, which impact the organization development for the next few years. ...
Introduction to Spatial Databases
... What is a SDBMS ? A SDBMS is a software module that can work with an underlying DBMS supports spatial data models, spatial abstract data types (ADTs) and a query language from which these ADTs are callable supports spatial indexing, efficient algorithms for processing spatial operations, and domain ...
... What is a SDBMS ? A SDBMS is a software module that can work with an underlying DBMS supports spatial data models, spatial abstract data types (ADTs) and a query language from which these ADTs are callable supports spatial indexing, efficient algorithms for processing spatial operations, and domain ...
Monitoring Database Objects
... ‘active values’, used in object-oriented programming languages such as Loops [28] is similar to traditional, procedural database triggers. But unlike DBMSs, active values are restricted to a single-user environment. Active values typically set properties or display some value. It is important that a ...
... ‘active values’, used in object-oriented programming languages such as Loops [28] is similar to traditional, procedural database triggers. But unlike DBMSs, active values are restricted to a single-user environment. Active values typically set properties or display some value. It is important that a ...
3.4 Overvieuw of various technical aspects in SDWH_v2.1
... concept and provide the necessary functionality for each SDWH level given in 3.1 deliverable. In a generic SDWH system we identified four functional layers, starting from the most detailed bottom level up to the top of the SDWH architecture where conceptual level is placed. The ground level correspo ...
... concept and provide the necessary functionality for each SDWH level given in 3.1 deliverable. In a generic SDWH system we identified four functional layers, starting from the most detailed bottom level up to the top of the SDWH architecture where conceptual level is placed. The ground level correspo ...
RQL: A SQL-like Query Language for Discovering
... wants to explore her hypothesis that higher salaries and higher education levels yield higher bonuses (Salary, Educlevel → Bonus), using Q3 . Figure 4 gives an overview of what RQL provides as a counterexample for this rule, that is, two tuples among which one (employee No. 10) has a higher Salary a ...
... wants to explore her hypothesis that higher salaries and higher education levels yield higher bonuses (Salary, Educlevel → Bonus), using Q3 . Figure 4 gives an overview of what RQL provides as a counterexample for this rule, that is, two tuples among which one (employee No. 10) has a higher Salary a ...
DACFx - Team System Cafe
... Dependencies make even simple tasks complex Promoting databases across environments ...
... Dependencies make even simple tasks complex Promoting databases across environments ...
Online Index Recommendations For High
... high dimensional data. A control feedback technique is introduced for measuring the performance. Through this a database could benefit from an index change. The index selection minimizes the cost of the queries in the work load. Online index selection is designed in the motivation if the que ...
... high dimensional data. A control feedback technique is introduced for measuring the performance. Through this a database could benefit from an index change. The index selection minimizes the cost of the queries in the work load. Online index selection is designed in the motivation if the que ...
The SAS System and DB2: Making the Connection
... good you wouldn't have much idea about what it stood for. As computers became exceedingly common and the costs of dealing with them became more and' more apparent, it became interesting to hunt for ways of managing this asset. It was postulated that if all the data were in one place, managed by a se ...
... good you wouldn't have much idea about what it stood for. As computers became exceedingly common and the costs of dealing with them became more and' more apparent, it became interesting to hunt for ways of managing this asset. It was postulated that if all the data were in one place, managed by a se ...
Database Management Systems - Health Information Technology
... “Data warehouses can become enormous with hundreds of gigabytes of transactions. As a result, subsets, known as "data marts," are often created for just one department or product line.” http://www.pcmag.com/encyclopedia/term/40866/data-warehouse, 4/18/13 ...
... “Data warehouses can become enormous with hundreds of gigabytes of transactions. As a result, subsets, known as "data marts," are often created for just one department or product line.” http://www.pcmag.com/encyclopedia/term/40866/data-warehouse, 4/18/13 ...
The relational database model - GITTA
... The relational scheme of an object (entity) can be represented as a table (relation). In this example the entity are grades. This entity is described with the attributes name, subject and the grade. The domain (or value range) for the attributes name and subjects are all lower- and upper-case charac ...
... The relational scheme of an object (entity) can be represented as a table (relation). In this example the entity are grades. This entity is described with the attributes name, subject and the grade. The domain (or value range) for the attributes name and subjects are all lower- and upper-case charac ...
Java Database Connectivity
... The DriverManager class is responsible for establishing connections to the data sources, accessed through the JDBC drivers JDBC database drivers are defined by classes that implement the “Driver” interface The “Properties” class defined in java.util package defines/stores the property (key) and the ...
... The DriverManager class is responsible for establishing connections to the data sources, accessed through the JDBC drivers JDBC database drivers are defined by classes that implement the “Driver” interface The “Properties” class defined in java.util package defines/stores the property (key) and the ...
Lecture24b
... What are the pros and cons for each approach? How does it depend on the sensing context? ...
... What are the pros and cons for each approach? How does it depend on the sensing context? ...
Lecture #06 PDF document
... • or massively parallel processor (MPP) machines • The majority of warehouse storage today is being managed by relational databases running on Unix platforms. • Oracle, Sybase Inc., IBM Corp. and Informix control 65 percent of the warehouse storage market. Meta Group Inc. (1996) ...
... • or massively parallel processor (MPP) machines • The majority of warehouse storage today is being managed by relational databases running on Unix platforms. • Oracle, Sybase Inc., IBM Corp. and Informix control 65 percent of the warehouse storage market. Meta Group Inc. (1996) ...
Chapter 2
... E.g, in the student – course scenario. Conceptual Level The student, course, and Community view of the database. student-course tables schema Describes what data isremains stored the in database same to all and relationships among the or data. managers users no matter what they want individually ...
... E.g, in the student – course scenario. Conceptual Level The student, course, and Community view of the database. student-course tables schema Describes what data isremains stored the in database same to all and relationships among the or data. managers users no matter what they want individually ...
presentation source - Courses
... • Development of a strategic plan for database development that supports the overall organization’s business plan. • DA supports top management in development of this plan. • The result of this stage is an enterprise data model. ...
... • Development of a strategic plan for database development that supports the overall organization’s business plan. • DA supports top management in development of this plan. • The result of this stage is an enterprise data model. ...
Paper
... users may change their associate attributes at some time, or some private keys might be compromised, key revocation or update for each attribute is necessary in order to make systems secure. This issue is even more difficult especially in ABE, since each attribute is conceivably shared by multiple u ...
... users may change their associate attributes at some time, or some private keys might be compromised, key revocation or update for each attribute is necessary in order to make systems secure. This issue is even more difficult especially in ABE, since each attribute is conceivably shared by multiple u ...
repository interoperability
... The Problems Two problems: • End users where/are faced with multiple search interfaces making resource discovery harder. • No machine based way of sharing the metadata ...
... The Problems Two problems: • End users where/are faced with multiple search interfaces making resource discovery harder. • No machine based way of sharing the metadata ...
SQL Server Permissions and Security Principals
... table in another database without permissions, if the two databases share the same owner login, by enabling Cross-Database Ownership Chaining on both databases. This is not enabled by default. It has to be enabled at the server level then activated in each database… ...
... table in another database without permissions, if the two databases share the same owner login, by enabling Cross-Database Ownership Chaining on both databases. This is not enabled by default. It has to be enabled at the server level then activated in each database… ...