Layered Temporal DBMS`s - Concepts and Techniques
... adopted. In addition, it is desirable that a language permits for incremental exploitation of the temporal support. When a temporal language is first adopted, no existing application code takes advantage of the temporal features. Only when converting old applications and developing new ones are the ...
... adopted. In addition, it is desirable that a language permits for incremental exploitation of the temporal support. When a temporal language is first adopted, no existing application code takes advantage of the temporal features. Only when converting old applications and developing new ones are the ...
HP OpenView Process & Files
... – Uses a “seed file” containing a list of nodes to define the initial management region – Uses the oid_to_type and HPoid2type file to determine correct IP topology behavior and correct vendor and SNMP agent value – oid_to_type example • 1.3.6.1.4.1.4.1.1:Micro Technology:MT LANCE/NMS agent ...
... – Uses a “seed file” containing a list of nodes to define the initial management region – Uses the oid_to_type and HPoid2type file to determine correct IP topology behavior and correct vendor and SNMP agent value – oid_to_type example • 1.3.6.1.4.1.4.1.1:Micro Technology:MT LANCE/NMS agent ...
PPT
... Durability requirement — once the user has been notified that the transaction has completed (i.e., the transfer of the $50 has taken place), the updates to the database by the transaction must persist even if there are software or hardware failures. ...
... Durability requirement — once the user has been notified that the transaction has completed (i.e., the transfer of the $50 has taken place), the updates to the database by the transaction must persist even if there are software or hardware failures. ...
DBSJ Journal論文のスタイルファイル（MS Word版）
... if the MBB of its θ-region is included in QR, the integrated appearance probability of this object inside QR is definitely greater than θ. To process queries more efficiently, we index MBBs of all the data objects in the database. The proposed index structure is dynamic and can be determined immedia ...
... if the MBB of its θ-region is included in QR, the integrated appearance probability of this object inside QR is definitely greater than θ. To process queries more efficiently, we index MBBs of all the data objects in the database. The proposed index structure is dynamic and can be determined immedia ...
Database Deployment scenarios and performance on SSD arrays
... certainly preferable, it is unfortunately cost ...
... certainly preferable, it is unfortunately cost ...
OEM Repository - a Second Look (White Paper)
... are generated by a shell script have a metric_name of “UDM”, while those that come from a SQL statement are under “SQLUDM” metric_name. Even though Oracle comes with several hundred predefined metrics, UDMs are very useful because they allow us to aim at a specific target parameter. Often the overal ...
... are generated by a shell script have a metric_name of “UDM”, while those that come from a SQL statement are under “SQLUDM” metric_name. Even though Oracle comes with several hundred predefined metrics, UDMs are very useful because they allow us to aim at a specific target parameter. Often the overal ...
Slide Template - Text Summarization
... With SCN, SQL statements always read a consistent set of values; those that were committed at or before the time the statement was started Oracle only reads committed changes; it will never reads dirty data ...
... With SCN, SQL statements always read a consistent set of values; those that were committed at or before the time the statement was started Oracle only reads committed changes; it will never reads dirty data ...
Chapter 15 - Amazon Web Services
... • Acceptable loss: how much data can a company lose while maintaining usability/availability of data – The less acceptable loss allowed, the more complex and longer backups will take to execute (and more time needed if restoration/recovery is required) – Examples: • An OLTP database requires zero lo ...
... • Acceptable loss: how much data can a company lose while maintaining usability/availability of data – The less acceptable loss allowed, the more complex and longer backups will take to execute (and more time needed if restoration/recovery is required) – Examples: • An OLTP database requires zero lo ...
The Enterprise Java Beans Part Two
... Quick response: allows client to process other item when they would otherwise be blocking for the method to return. Request prioritization: asynchronous server can prioritize messages in different order then they arrive into the system. Rapidly assembling disparate systems: provides rapid developmen ...
... Quick response: allows client to process other item when they would otherwise be blocking for the method to return. Request prioritization: asynchronous server can prioritize messages in different order then they arrive into the system. Rapidly assembling disparate systems: provides rapid developmen ...
Backup and Recovery
... • Acceptable loss: how much data can a company lose while maintaining usability/availability of data – The less acceptable loss allowed, the more complex and longer backups will take to execute (and more time needed if restoration/recovery is required) – Examples: • An OLTP database requires zero lo ...
... • Acceptable loss: how much data can a company lose while maintaining usability/availability of data – The less acceptable loss allowed, the more complex and longer backups will take to execute (and more time needed if restoration/recovery is required) – Examples: • An OLTP database requires zero lo ...
ConcurrencyControl
... Each transaction Ti must request a S (shared) lock on object before reading, and an X (exclusive) lock on object before writing. If no conflicting lock is active is set, the lock can be granted (and the transaction can execute the operation), otherwise the transaction must wait until conflicting l ...
... Each transaction Ti must request a S (shared) lock on object before reading, and an X (exclusive) lock on object before writing. If no conflicting lock is active is set, the lock can be granted (and the transaction can execute the operation), otherwise the transaction must wait until conflicting l ...
Patterns for Extending an OO Model with Temporal Features
... In addition to the time referential problem (explained above), OO models should provide rich temporal domains allowing to manipulate absolute and relative time but also help in the management of periods of time and quantities of time. Object time stamping problem The application engineer may want to ...
... In addition to the time referential problem (explained above), OO models should provide rich temporal domains allowing to manipulate absolute and relative time but also help in the management of periods of time and quantities of time. Object time stamping problem The application engineer may want to ...
Tentative Plan to establish a Database Management System for
... undersea feature, such as name evolution ,former name, standard name, name approved by SCUFN, and time status related to geometric type items , which can best define the location of a feature, and other geographic element variations. IV) Other data: The metadata of the supporting data and other rela ...
... undersea feature, such as name evolution ,former name, standard name, name approved by SCUFN, and time status related to geometric type items , which can best define the location of a feature, and other geographic element variations. IV) Other data: The metadata of the supporting data and other rela ...
ER Model 2 - Department of Computer Science
... “many” side could result in null values The table corresponding to a relationship set linking a weak entity set to its identifying strong entity set is redundant. E.g. The payment table already contains the information that would appear in the loan-payment table (i.e., the columns loan-number an ...
... “many” side could result in null values The table corresponding to a relationship set linking a weak entity set to its identifying strong entity set is redundant. E.g. The payment table already contains the information that would appear in the loan-payment table (i.e., the columns loan-number an ...
Project Pxxx - EURESCOM Home Page
... available database technology, such as data warehouses, parallel databases, multidimensional databases, real-time databases and replication servers. Another important area of concern will be on the overall architecture of the database and the application tools and the different interaction patterns ...
... available database technology, such as data warehouses, parallel databases, multidimensional databases, real-time databases and replication servers. Another important area of concern will be on the overall architecture of the database and the application tools and the different interaction patterns ...
Object Query Language
... The group is not a formal standards committee like ISO or ANSII, believing instead that they can make faster progress than an official standards body. The nearest a formal body has come to defining a similar standard is ANSI and the ANSI X3H2, but this is more an extension to existing relational dat ...
... The group is not a formal standards committee like ISO or ANSII, believing instead that they can make faster progress than an official standards body. The nearest a formal body has come to defining a similar standard is ANSI and the ANSI X3H2, but this is more an extension to existing relational dat ...
Ch17: concurency control
... important to keep the cpu humming by working on several user programs concurrently. ...
... important to keep the cpu humming by working on several user programs concurrently. ...
kifer_268334_ppt08
... – Fetch and store routines are executed at client when EXECUTE is executed to communicate argument values with DBMS – EXECUTE can be invoked multiple times with different values of in parameters • Each invocation uses same query execution plan ...
... – Fetch and store routines are executed at client when EXECUTE is executed to communicate argument values with DBMS – EXECUTE can be invoked multiple times with different values of in parameters • Each invocation uses same query execution plan ...
IT Core Curriculum - Health information technology
... Microsoft Technology Associate Certification ...
... Microsoft Technology Associate Certification ...
Working with Data and ADO.Net
... ADO.NET is Microsoft Latest Data Access Technology to retrieve, manipulate and update data in many different ways. ...
... ADO.NET is Microsoft Latest Data Access Technology to retrieve, manipulate and update data in many different ways. ...
ERModelling
... Lower-level entity sets: Have attributes that do not apply to the higher-level entity set. Participate in relationships that do not apply to the higher-level entity set, e.g., airline employees, pilots, crew, agents, etc., but only pilots are certified certified to fly certain aircraft types. ...
... Lower-level entity sets: Have attributes that do not apply to the higher-level entity set. Participate in relationships that do not apply to the higher-level entity set, e.g., airline employees, pilots, crew, agents, etc., but only pilots are certified certified to fly certain aircraft types. ...
Integrating Workload Replays into Database Change
... how it scales. Or what if you were happy with the capture but wanted to change the bind values for the SQL statements processed – such that you can perform “what if” type or scenario analysis. Finally what if you also wanted to manually add something new to the mix – maybe some logic that says when ...
... how it scales. Or what if you were happy with the capture but wanted to change the bind values for the SQL statements processed – such that you can perform “what if” type or scenario analysis. Finally what if you also wanted to manually add something new to the mix – maybe some logic that says when ...
Tirgul9 - FTP Directory Listing
... – Security details for the connection. – And other specific details. • NOTE: in some cases you do not have to define a connection object. Then ADO will create one for you. as a rule, always define connection object explicitly. ‘Tirgul’ #9 ...
... – Security details for the connection. – And other specific details. • NOTE: in some cases you do not have to define a connection object. Then ADO will create one for you. as a rule, always define connection object explicitly. ‘Tirgul’ #9 ...
Relational model
The relational model for database management is an approach to managing data using a structure and language consistent with first-order predicate logic, first described in 1969 by Edgar F. Codd. In the relational model of a database, all data is represented in terms of tuples, grouped into relations. A database organized in terms of the relational model is a relational database.The purpose of the relational model is to provide a declarative method for specifying data and queries: users directly state what information the database contains and what information they want from it, and let the database management system software take care of describing data structures for storing the data and retrieval procedures for answering queries.Most relational databases use the SQL data definition and query language; these systems implement what can be regarded as an engineering approximation to the relational model. A table in an SQL database schema corresponds to a predicate variable; the contents of a table to a relation; key constraints, other constraints, and SQL queries correspond to predicates. However, SQL databases deviate from the relational model in many details, and Codd fiercely argued against deviations that compromise the original principles.