PL/SQL Programming Chapter 8 Database
... Simple data validity checks can be accomplished with CHECK constraints. However, more complex checks or checks that require comparison to a live data value from the database can be accomplished using triggers. A trigger could be used to ensure that any changes to the regular price of a product do no ...
... Simple data validity checks can be accomplished with CHECK constraints. However, more complex checks or checks that require comparison to a live data value from the database can be accomplished using triggers. A trigger could be used to ensure that any changes to the regular price of a product do no ...
Middleware-based Database Replication: The Gaps
... We find that a few “hot topics” (e.g., reliable multicast and lazy replication [21]) attract the lion’s share of academic interest, while other equally important aspects (e.g., availability and management) are often forgotten—this limits the impact research systems can have on the real world. Motiv ...
... We find that a few “hot topics” (e.g., reliable multicast and lazy replication [21]) attract the lion’s share of academic interest, while other equally important aspects (e.g., availability and management) are often forgotten—this limits the impact research systems can have on the real world. Motiv ...
Integrating Workload Replays into Database Change
... But for many it’s overkill or simply not an option due to financial reasons. So the question becomes “Is there some way to capture and replay Oracle database application workloads without additional cost, that’s not overly complex, and yet that’s reliable enough for reasonable before and after compa ...
... But for many it’s overkill or simply not an option due to financial reasons. So the question becomes “Is there some way to capture and replay Oracle database application workloads without additional cost, that’s not overly complex, and yet that’s reliable enough for reasonable before and after compa ...
XML Based Search Agent for Information Retrieval
... such as attributes, entity sets and relationships sets. Homonyms occur when the same word is used for two different meanings in different databases. E.g., “Inspector” in the police database versus “inspector” in the treasury database. Synonyms are two or more words, used to describe the same concept ...
... such as attributes, entity sets and relationships sets. Homonyms occur when the same word is used for two different meanings in different databases. E.g., “Inspector” in the police database versus “inspector” in the treasury database. Synonyms are two or more words, used to describe the same concept ...
Empower Your User Community with a SAS Information Warehouse
... to meet their strict criteria. Truett Phillips, operations coordinator said: ·we had no idea that the SAS System could be used as a DBMS , and we certainly didn't think of it as an application design toot•. However, they discovered both of these attributes and standardized on the SAS system. For the ...
... to meet their strict criteria. Truett Phillips, operations coordinator said: ·we had no idea that the SAS System could be used as a DBMS , and we certainly didn't think of it as an application design toot•. However, they discovered both of these attributes and standardized on the SAS system. For the ...
Structured Query Language Injection
... improved on simple Perl scripts to become part of Open Source exploit frameworks such as Metasploit (www.metasploit.com/) and automated components of botnets. Botnets, compromised computers controllable by a central command, have been used to launch denial of service (DoS) attacks, click fraud and i ...
... improved on simple Perl scripts to become part of Open Source exploit frameworks such as Metasploit (www.metasploit.com/) and automated components of botnets. Botnets, compromised computers controllable by a central command, have been used to launch denial of service (DoS) attacks, click fraud and i ...
Chapter 14: Query Optimization
... for each expression found so far, use all applicable equivalence rules, and add newly generated expressions to the set of expressions found so far The above approach is very expensive in space and time Space requirements reduced by sharing common subexpressions: ...
... for each expression found so far, use all applicable equivalence rules, and add newly generated expressions to the set of expressions found so far The above approach is very expensive in space and time Space requirements reduced by sharing common subexpressions: ...
Transaction Processing and Recovery
... reads A1 total = 20 reads A2 total = 40 changes A3 to 30 reads A3 total = 70 changes A2 to 10 reads A4 total = 90 ...
... reads A1 total = 20 reads A2 total = 40 changes A3 to 30 reads A3 total = 70 changes A2 to 10 reads A4 total = 90 ...
Document
... key of another relation. The attribute is called a foreign key. E.g. customer_name and account_number attributes of depositor are foreign keys to customer and account respectively. Only values occurring in the primary key attribute of the referenced relation may occur in the foreign key attribut ...
... key of another relation. The attribute is called a foreign key. E.g. customer_name and account_number attributes of depositor are foreign keys to customer and account respectively. Only values occurring in the primary key attribute of the referenced relation may occur in the foreign key attribut ...
Buffer Management in Distributed Database Systems: A Data Mining
... a database transaction. In other words, some associations among pages referenced may exist in page reference sequences of user transactions. That is, if certain pages have been accessed, then there are some other pages will be most likely accessed as well , Such association results from several fact ...
... a database transaction. In other words, some associations among pages referenced may exist in page reference sequences of user transactions. That is, if certain pages have been accessed, then there are some other pages will be most likely accessed as well , Such association results from several fact ...
cs.jyu.fi
... four different specifications proposed through W3C: the Infoset model [21], the XPath data model [18], the DOM model [6, 37], and the XQuery 1.0 and XPath 2.0 Data Model [29]. These models do not describe explicit text markup, but they do describe document structure, which is often used to encode en ...
... four different specifications proposed through W3C: the Infoset model [21], the XPath data model [18], the DOM model [6, 37], and the XQuery 1.0 and XPath 2.0 Data Model [29]. These models do not describe explicit text markup, but they do describe document structure, which is often used to encode en ...
Requirements for XML Document Database Systems
... four different specifications proposed through W3C: the Infoset model [21], the XPath data model [18], the DOM model [6, 37], and the XQuery 1.0 and XPath 2.0 Data Model [29]. These models do not describe explicit text markup, but they do describe document structure, which is often used to encode en ...
... four different specifications proposed through W3C: the Infoset model [21], the XPath data model [18], the DOM model [6, 37], and the XQuery 1.0 and XPath 2.0 Data Model [29]. These models do not describe explicit text markup, but they do describe document structure, which is often used to encode en ...
EMC INFRASTRUCTURE FOR THE SMART GRID ANALYTICS PLATFORM IN PARTNERSHIP WITH
... detailed information about the power usage of its customers and the state of its grid. This kind of detailed information allows utilities to develop advanced analytic models to address challenges such as voltage compliance, energy theft, Power Factor issues, high bill prediction, and many others. Al ...
... detailed information about the power usage of its customers and the state of its grid. This kind of detailed information allows utilities to develop advanced analytic models to address challenges such as voltage compliance, energy theft, Power Factor issues, high bill prediction, and many others. Al ...
SQL Tuning Advisor - University System of Georgia
... Very few issues found during porting/testing <30 objects changed <5 changed for performance ...
... Very few issues found during porting/testing <30 objects changed <5 changed for performance ...
Integrity Constraints Constraints on a Single Relation Not Null
... check clause to ensure that an hourly_wage domain allows only values greater than a specified value. create domain hourly_wage numeric (5,2) constraint value_test check(value > = 4.00) ...
... check clause to ensure that an hourly_wage domain allows only values greater than a specified value. create domain hourly_wage numeric (5,2) constraint value_test check(value > = 4.00) ...
A database for G proteins and their interaction with GPCRs | BMC
... GPCR kinases, ion channels, and molecules of the mitogen-activated protein kinase pathway, resulting in a variety of cellular functions [9]. However, there is evidence that some GPCRs transduce their signal through in a way that is not G protein-dependent [10], and also that hetero-trimeric G protei ...
... GPCR kinases, ion channels, and molecules of the mitogen-activated protein kinase pathway, resulting in a variety of cellular functions [9]. However, there is evidence that some GPCRs transduce their signal through in a way that is not G protein-dependent [10], and also that hetero-trimeric G protei ...
Fast Nearest Neighbor Search with Keywords - OPUS
... A spatial database manages multidimensional objects (such as points, rectangles, etc.), and provides fast access to those objects based on different selection criteria. The importance of spatial databases is reflected by the convenience of modeling entities of reality in a geometric manner. For exam ...
... A spatial database manages multidimensional objects (such as points, rectangles, etc.), and provides fast access to those objects based on different selection criteria. The importance of spatial databases is reflected by the convenience of modeling entities of reality in a geometric manner. For exam ...
Simplify Profiles Installation and Configuration Guide
... Microsoft best practice of creating your OU structure based on your organizational design. Use standard Active Directory security groups to assign objects to users spread out across multiple OUs. New u ...
... Microsoft best practice of creating your OU structure based on your organizational design. Use standard Active Directory security groups to assign objects to users spread out across multiple OUs. New u ...
XML DB Architecture
... Queries on Queries. Because XQueryX is represented in XML, queries can be queried and can be transformed into new queries. For instance, a query can be performed against a set of XQueryX queries to determine which queries use FLWOR expressions to range over a set of invoices. ...
... Queries on Queries. Because XQueryX is represented in XML, queries can be queried and can be transformed into new queries. For instance, a query can be performed against a set of XQueryX queries to determine which queries use FLWOR expressions to range over a set of invoices. ...
Static Detection of Second-Order Vulnerabilities in Web Applications 23rd USENIX Security Symposium.
... can be frequently deleted or updated. Note that this definition also includes session data since information about a user’s session is stored on the server and can be reused by an adversary. We now introduce three commonly used PDS by web applications. ...
... can be frequently deleted or updated. Note that this definition also includes session data since information about a user’s session is stored on the server and can be reused by an adversary. We now introduce three commonly used PDS by web applications. ...
QAQQINI Options - Gateway/400 Group
... so that shows up in the logical's format and 2. RENAME of a field (these two exceptions do not make the key derived) z Keyed logical files with K *NONE specified. z Keyed logical files with Alternate Collating Sequence (ACS) specified z SQL indexes created when the sort sequence active at the time o ...
... so that shows up in the logical's format and 2. RENAME of a field (these two exceptions do not make the key derived) z Keyed logical files with K *NONE specified. z Keyed logical files with Alternate Collating Sequence (ACS) specified z SQL indexes created when the sort sequence active at the time o ...
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.