Database Access with EJB Application Servers
... by application programmers in many areas of software engineering has been summarized as Design Patterns. Pattern is a solution to a recurring problem in the context. Once Pattern (solution) is developed from a recurring problem that can be reused many times without reinventing the solution again. Pa ...
... by application programmers in many areas of software engineering has been summarized as Design Patterns. Pattern is a solution to a recurring problem in the context. Once Pattern (solution) is developed from a recurring problem that can be reused many times without reinventing the solution again. Pa ...
ER Model
... Weak Entity Sets (Cont.) • Note: the primary key of the strong entity set is not explicitly stored with the weak entity set, since it is implicit in the identifying relationship. • If course_id were explicitly stored, section could be made a strong entity, but then the relationship between section ...
... Weak Entity Sets (Cont.) • Note: the primary key of the strong entity set is not explicitly stored with the weak entity set, since it is implicit in the identifying relationship. • If course_id were explicitly stored, section could be made a strong entity, but then the relationship between section ...
Flashback Database
... Excluding Tablespaces from Flashback Database ALTER TABLESPACE FLASHBACK {ON|OFF}
SQL> SELECT name, flashback_on
2 FROM
v$tablespace;
...
... Excluding Tablespaces from Flashback Database ALTER TABLESPACE
mod-6
... delete cascade -- if a department (say Biology) is deleted from the department relation, then all tuples in the course relation that refer to Biology are deleted. update cascade -- if a department (say Biology) is changed to (say Life-Science) in the department relation, then all tuples in the c ...
... delete cascade -- if a department (say Biology) is deleted from the department relation, then all tuples in the course relation that refer to Biology are deleted. update cascade -- if a department (say Biology) is changed to (say Life-Science) in the department relation, then all tuples in the c ...
Lesson 16
... Excluding Tablespaces from Flashback Database ALTER TABLESPACE FLASHBACK {ON|OFF}
SQL> SELECT name, flashback_on
2 FROM
v$tablespace;
...
... Excluding Tablespaces from Flashback Database ALTER TABLESPACE
A Taste of SQL
... underlying files and most carefully written programs are immune to new variables in the data sets they process. SQL has been implemented by many people, on many hardware platforms. Many new database solutions offer a form of SQL, and existing vendors are retro fitting relational-query capabilities t ...
... underlying files and most carefully written programs are immune to new variables in the data sets they process. SQL has been implemented by many people, on many hardware platforms. Many new database solutions offer a form of SQL, and existing vendors are retro fitting relational-query capabilities t ...
entity set
... Weak Entity Sets (Cont.) • Note: the primary key of the strong entity set is not explicitly stored with the weak entity set, since it is implicit in the identifying relationship. • If course_id were explicitly stored, section could be made a strong entity, but then the relationship between section ...
... Weak Entity Sets (Cont.) • Note: the primary key of the strong entity set is not explicitly stored with the weak entity set, since it is implicit in the identifying relationship. • If course_id were explicitly stored, section could be made a strong entity, but then the relationship between section ...
Ch01 slides
... The hierarchical database model provides only for one-to-many relationships, called parent/child relationships. The network database model can accommodate any type of relationship. Relational databases are less efficient than the other data models because they require more system resources. Ho ...
... The hierarchical database model provides only for one-to-many relationships, called parent/child relationships. The network database model can accommodate any type of relationship. Relational databases are less efficient than the other data models because they require more system resources. Ho ...
an Overview of Finegrained Authorization
... Lots of interest in fine-grained access control View replacement vs. authorization checking model ...
... Lots of interest in fine-grained access control View replacement vs. authorization checking model ...
Document
... 1. For each data item Q, if transaction Ti reads the initial value of Q in schedule S, then transaction Ti must, in schedule S´, also read the initial value of Q. 2. For each data item Q if transaction Ti executes read(Q) in schedule S, and that value was produced by transaction Tj (if any), then tr ...
... 1. For each data item Q, if transaction Ti reads the initial value of Q in schedule S, then transaction Ti must, in schedule S´, also read the initial value of Q. 2. For each data item Q if transaction Ti executes read(Q) in schedule S, and that value was produced by transaction Tj (if any), then tr ...
Business Intelligence Data Warehousing 1) Before implementing an
... 46) In three-tier architecture for data warehouse, ________ contain the data and the software for data acquisition in one tier, the data warehouse is another tier, and the third tier includes the decision support and the client. Answer: operational systems Page Ref: 38 47) The ________ is a concess ...
... 46) In three-tier architecture for data warehouse, ________ contain the data and the software for data acquisition in one tier, the data warehouse is another tier, and the third tier includes the decision support and the client. Answer: operational systems Page Ref: 38 47) The ________ is a concess ...
Oracle Database 11g Family
... Oracle Real Application Clusters (RAC) harnesses the processing power of multiple, interconnected servers on a cluster. It provides unlimited scalability and high availability for any packaged or custom application by exploiting clustered hardware configurations, with the simplicity and ease of use ...
... Oracle Real Application Clusters (RAC) harnesses the processing power of multiple, interconnected servers on a cluster. It provides unlimited scalability and high availability for any packaged or custom application by exploiting clustered hardware configurations, with the simplicity and ease of use ...
Object operations benchmark
... we believe that the level of concurrency is quite different — an engineer may “check out” part of a design and work ...
... we believe that the level of concurrency is quite different — an engineer may “check out” part of a design and work ...
PPT
... commit instruction in T10, If T10 fails, T10 is supposed to be rolled back, then T11 and T12 must also be rolled back. Can lead to the undoing of a significant amount of work ...
... commit instruction in T10, If T10 fails, T10 is supposed to be rolled back, then T11 and T12 must also be rolled back. Can lead to the undoing of a significant amount of work ...
Query-aware Test Generation Using a Relational Constraint Solver
... executions. Query-aware generation is gaining popularity in both DBMS and database application testing [9], [25]. Database generation approaches, however, do not provide a mechanism to verify the result of executing test queries on the generated databases. This process is currently performed either ...
... executions. Query-aware generation is gaining popularity in both DBMS and database application testing [9], [25]. Database generation approaches, however, do not provide a mechanism to verify the result of executing test queries on the generated databases. This process is currently performed either ...
Extensible Markup Language Databases: A Study
... Indian Journal of Science and Technology, Vol 9(9), DOI: 10.17485/ijst/2016/v9i9/72130, March 2016 ...
... Indian Journal of Science and Technology, Vol 9(9), DOI: 10.17485/ijst/2016/v9i9/72130, March 2016 ...
DataBase Management Systems Lecture Notes
... This is the average number of transactions that can be processed per minute. 5. Security Design: In this step, we must identify different user groups and different roles played by various users. For each role, and user group, we must identify the parts of the database that they must be able to acces ...
... This is the average number of transactions that can be processed per minute. 5. Security Design: In this step, we must identify different user groups and different roles played by various users. For each role, and user group, we must identify the parts of the database that they must be able to acces ...
Relational Algebra
... EQUALITY JOIN: Connect tuples from two relations that match (have equal values) on certain attributes. This is exactly like THETA JOIN, except that the condition c is only allowed to have equalities. ...
... EQUALITY JOIN: Connect tuples from two relations that match (have equal values) on certain attributes. This is exactly like THETA JOIN, except that the condition c is only allowed to have equalities. ...
The Design and Implementation of a Self
... We are glad to see that the recent introduction of trusted platforms provides possible solutions to processor level, OS level, and DBMS level intrusion tolerance. Such a platform employs a hardware package containing a processor, memory, and tamper-detecting circuitry [49], or various techniques for ...
... We are glad to see that the recent introduction of trusted platforms provides possible solutions to processor level, OS level, and DBMS level intrusion tolerance. Such a platform employs a hardware package containing a processor, memory, and tamper-detecting circuitry [49], or various techniques for ...
Implementing SPARQL Support for Relational Databases and Possible Enhancements
... single model. It is often desirable that a database server supports multiple stores that keep data independent of each other. Most current SPARQL server implementations include support to handle distinct models. While named graphs try to address this problem, it is often favorable to have fully dist ...
... single model. It is often desirable that a database server supports multiple stores that keep data independent of each other. Most current SPARQL server implementations include support to handle distinct models. While named graphs try to address this problem, it is often favorable to have fully dist ...
XML and Databases
... – Formally: every start tag must have a unique matching end tag, that is in the context of the same parent element. ...
... – Formally: every start tag must have a unique matching end tag, that is in the context of the same parent element. ...