Oracle Backup and Recovery Guide
... files, if a backup copy of a data file from some point in time and a complete set of redo logs from that time forward are available, the database can apply changes recorded in the redo logs, in order to reconstruct the data file contents at any point between the backup time and the end of the last ...
... files, if a backup copy of a data file from some point in time and a complete set of redo logs from that time forward are available, the database can apply changes recorded in the redo logs, in order to reconstruct the data file contents at any point between the backup time and the end of the last ...
Database Security
... names do not have to be unique; different transactions can have the same transaction name at the same time by the same owner. You can use any name that enables you to distinguish the transaction. ...
... names do not have to be unique; different transactions can have the same transaction name at the same time by the same owner. You can use any name that enables you to distinguish the transaction. ...
SQL Standardization: The Next Steps
... able to focus all of their efforts on building new applications that use SQL database systems to manage their data. They are increasingly being required to integrate all that SQL data with their legacy data (which some observers suggest may actually contain an order of magnitude more data than SQL d ...
... able to focus all of their efforts on building new applications that use SQL database systems to manage their data. They are increasingly being required to integrate all that SQL data with their legacy data (which some observers suggest may actually contain an order of magnitude more data than SQL d ...
Using SQL in an Application - Computer Science, Stony Brook
... language A conventional language (e.g., C, Java) that supplies control structures, computational capabilities, interaction with physical devices SQL: supplies ability to interact with database. Using the facilities of both: the application program can act as an intermediary between the user at a ter ...
... language A conventional language (e.g., C, Java) that supplies control structures, computational capabilities, interaction with physical devices SQL: supplies ability to interact with database. Using the facilities of both: the application program can act as an intermediary between the user at a ter ...
Database Security with focus on Hyperion Database
... It is a new method for protecting web-based databases; it utilizes the databases’ built-in access control mechanisms enhanced with Parameterized Views and adapts them to work with web applications. Their proposed access control mechanism is applicable for any existing databases and is capable to pre ...
... It is a new method for protecting web-based databases; it utilizes the databases’ built-in access control mechanisms enhanced with Parameterized Views and adapts them to work with web applications. Their proposed access control mechanism is applicable for any existing databases and is capable to pre ...
White Paper - The Cloud Report
... Gartner characterizes big data as: "high volume, velocity, and/or variety information assets that demand new, innovative forms of processing for enhanced decision making, business insights or process optimization." However, for many, this is not new. Companies have been data mining large volumes of ...
... Gartner characterizes big data as: "high volume, velocity, and/or variety information assets that demand new, innovative forms of processing for enhanced decision making, business insights or process optimization." However, for many, this is not new. Companies have been data mining large volumes of ...
A,r
... Heuristic Optimization Cost-based optimization is expensive, even with dynamic programming. ...
... Heuristic Optimization Cost-based optimization is expensive, even with dynamic programming. ...
Making Your Network Safe for Databases
... when security procedures are implemented. Often, the focus is targeted towards securing the web server and little thought goes into how the database may be vulnerable because all of the ‘front-end’ security has been implemented. But databases usually contain a company’s most valuable information ass ...
... when security procedures are implemented. Often, the focus is targeted towards securing the web server and little thought goes into how the database may be vulnerable because all of the ‘front-end’ security has been implemented. But databases usually contain a company’s most valuable information ass ...
Chapter 19: Distributed Databases
... Failure of a site. Loss of massages Handled by network transmission control protocols such as TCPIP Failure of a communication link Handled by network protocols, by routing messages via alternative links Network partition A network is said to be partitioned when it has been split into ...
... Failure of a site. Loss of massages Handled by network transmission control protocols such as TCPIP Failure of a communication link Handled by network protocols, by routing messages via alternative links Network partition A network is said to be partitioned when it has been split into ...
Distributed Databases
... Failure of a site. Loss of massages Handled by network transmission control protocols such as TCPIP Failure of a communication link Handled by network protocols, by routing messages via alternative links Network partition A network is said to be partitioned when it has been split into ...
... Failure of a site. Loss of massages Handled by network transmission control protocols such as TCPIP Failure of a communication link Handled by network protocols, by routing messages via alternative links Network partition A network is said to be partitioned when it has been split into ...
ppt
... – Can encapsulate application logic while staying “close” to the data – Reuse of application logic by different users – Avoid tuple-at-a-time return of records through cursors ...
... – Can encapsulate application logic while staying “close” to the data – Reuse of application logic by different users – Avoid tuple-at-a-time return of records through cursors ...
Weak Entity Sets
... Refers to number of entity sets that participate in a relationship set. Relationship sets that involve two entity sets are binary (or degree two). Generally, most relationship sets in a database system are binary. Relationship sets may involve more than two entity sets. E.g. Suppose employees of a ...
... Refers to number of entity sets that participate in a relationship set. Relationship sets that involve two entity sets are binary (or degree two). Generally, most relationship sets in a database system are binary. Relationship sets may involve more than two entity sets. E.g. Suppose employees of a ...
21-metadata - Duke Database Devils
... – If we add another blade, it adds to the total load we can serve. ...
... – If we add another blade, it adds to the total load we can serve. ...
Optimizing Queries with Expensive Predicates
... Traditionally, a DBMS would execute this query by applying all the single-table restrictions in the where clause before performing the join of maps and weeks, since early restriction can lower the complexity of join processing. However in this example the cost of evaluating the expensive restrictio ...
... Traditionally, a DBMS would execute this query by applying all the single-table restrictions in the where clause before performing the join of maps and weeks, since early restriction can lower the complexity of join processing. However in this example the cost of evaluating the expensive restrictio ...
CS1020106
... ABSTRACTWeb applications of all kinds, whether online shops or partner portals, have in recent years increasingly become the target of hacker attacks. The attackers are using methods which are specifically aimed at exploiting potential weak spots in the web application software itself - and this is ...
... ABSTRACTWeb applications of all kinds, whether online shops or partner portals, have in recent years increasingly become the target of hacker attacks. The attackers are using methods which are specifically aimed at exploiting potential weak spots in the web application software itself - and this is ...
Chapter 25
... RDBMS, object identity is value-based: primary key is used to provide uniqueness. Primary keys do not provide type of object identity required in OO systems: – key only unique within a relation, not across entire system; – key generally chosen from attributes of relation, making it dependent on ob ...
... RDBMS, object identity is value-based: primary key is used to provide uniqueness. Primary keys do not provide type of object identity required in OO systems: – key only unique within a relation, not across entire system; – key generally chosen from attributes of relation, making it dependent on ob ...
PowerPoint Slides
... XML Web services, Microsoft Windows®– based applications, and Web solutions. ...
... XML Web services, Microsoft Windows®– based applications, and Web solutions. ...
Efficient Query Evaluation on Probabilistic Databases
... for every relation Rp : this ensures that we don’t associate two different events e1 and e2 to the same tuple t (instead, we may want to associate e1 ∨ e2 to t). In addition to this tabular representation of a probabilistic relation, we consider a functional representation, where a probabilistic ins ...
... for every relation Rp : this ensures that we don’t associate two different events e1 and e2 to the same tuple t (instead, we may want to associate e1 ∨ e2 to t). In addition to this tabular representation of a probabilistic relation, we consider a functional representation, where a probabilistic ins ...
Database model
A database model is a type of data model that determines the logical structure of a database and fundamentally determines in which manner data can be stored, organized, and manipulated. The most popular example of a database model is the relational model, which uses a table-based format.