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Efficient Indexing Methods for Temporal Relations
... The representations can be different at each level (external, conceptual, physical), but we are concerned with the tuple representation at the physical level. Fig. l(a) shows timeinterval representation of the MANAGER and COMMISSION relations. On the other hand, the representation in Fig. l(b) store ...
... The representations can be different at each level (external, conceptual, physical), but we are concerned with the tuple representation at the physical level. Fig. l(a) shows timeinterval representation of the MANAGER and COMMISSION relations. On the other hand, the representation in Fig. l(b) store ...
Chapter 3 Notes
... presents data as a set of relations. • An external schema specifies a view of the data in terms of the conceptual level. It is tailored to the needs of a particular category of users. – Portions of stored data should not be seen by some users. • Students should not see their files in full. • Faculty ...
... presents data as a set of relations. • An external schema specifies a view of the data in terms of the conceptual level. It is tailored to the needs of a particular category of users. – Portions of stored data should not be seen by some users. • Students should not see their files in full. • Faculty ...
A Semantic Web Knowledge Base System that Supports Large Scale Data Integration
... Following our algorithm described in the last section, creating tables corresponds to the definition of classes or properties in ontology. Each class and property has a table named using its URI. Normally, the ’sub’ and ’obj’ fields are foreign keys from the ’ID’ field of the class tables that are t ...
... Following our algorithm described in the last section, creating tables corresponds to the definition of classes or properties in ontology. Each class and property has a table named using its URI. Normally, the ’sub’ and ’obj’ fields are foreign keys from the ’ID’ field of the class tables that are t ...
Chapter 1
... - One package has computational support of the programming language, as well as database access with SQL ...
... - One package has computational support of the programming language, as well as database access with SQL ...
A NoSQL data management infrastructure for bridge monitoring , Sean O’Connor
... transactions are not required. Based on its flexibility, performance and scalability, MongoDB has been widely used in many fields including Internet of Things (IoT) applications and real-time analysis (Chodorow 2013, Hows et al. 2014). To support flexible data schema and high query performance, the ...
... transactions are not required. Based on its flexibility, performance and scalability, MongoDB has been widely used in many fields including Internet of Things (IoT) applications and real-time analysis (Chodorow 2013, Hows et al. 2014). To support flexible data schema and high query performance, the ...
Understanding and Selecting a Database Assessment
... Few people understand the internal complexities of database systems. Historically, as long as databases ran without visible trouble, database administrators (DBAs) enjoyed implicit trust that the systems under their control were secure. Unfortunately, many attackers have recently demonstrate how eas ...
... Few people understand the internal complexities of database systems. Historically, as long as databases ran without visible trouble, database administrators (DBAs) enjoyed implicit trust that the systems under their control were secure. Unfortunately, many attackers have recently demonstrate how eas ...
Fundamentals, Design, and Implementation, 9/e DATABASE
... reports – Investigate user performance complaints – Assess need for changes in database structure or application design – Modify database structure – Evaluate and implement new DBMS features – Tune the DBMS ...
... reports – Investigate user performance complaints – Assess need for changes in database structure or application design – Modify database structure – Evaluate and implement new DBMS features – Tune the DBMS ...
FACT SHEET MANAGED SERVICES FOR DATABASES
... The Manage process is where we analyze the demand relating to issues and problems that have arisen over a certain time period and, where possible, identify patterns in terms of the root causes and then, once identified, remove these causes of failure. In addition this process gathers and feeds analy ...
... The Manage process is where we analyze the demand relating to issues and problems that have arisen over a certain time period and, where possible, identify patterns in terms of the root causes and then, once identified, remove these causes of failure. In addition this process gathers and feeds analy ...
031104STL_RPO_CATT
... The extended CATT tool should be applicable to an evolving list of datasets. Each new dataset consists of an aerosol monitoring dataset and a companion trajectory dataset. Thus, for each new CATT dataset, the trajectory data will be submitted to the CATT system separately. ...
... The extended CATT tool should be applicable to an evolving list of datasets. Each new dataset consists of an aerosol monitoring dataset and a companion trajectory dataset. Thus, for each new CATT dataset, the trajectory data will be submitted to the CATT system separately. ...
Table of Contents - CECS Multimedia Communications and
... According to the authors, I think this is a very useful approach because it can be implemented without affecting the existing database. In addition, it can be implemented on many existing databases easily. But this approach has two disadvantages. First, this approach is very time consuming for large ...
... According to the authors, I think this is a very useful approach because it can be implemented without affecting the existing database. In addition, it can be implemented on many existing databases easily. But this approach has two disadvantages. First, this approach is very time consuming for large ...
Foundations of Probabilistic Answers to Queries
... Processing probabilistic data is fundamentally more complex than other data models • Some previous approaches sidestepped complexity There exists a rich collection of powerful, non-trivial techniques and results, some old, some very recent, that could lead to practical management techniques for prob ...
... Processing probabilistic data is fundamentally more complex than other data models • Some previous approaches sidestepped complexity There exists a rich collection of powerful, non-trivial techniques and results, some old, some very recent, that could lead to practical management techniques for prob ...
ACTIVE Deliverable template - PlanetData
... MapReduce jobs can be designed to achieve performance goals in general. Furthermore we provide guidance on how to optimise MapReduce jobs based on our experience with Hadoop. We detail the different attributes of a MapReduce job or an Hadoop cluster itself that have to be addressed to optimise the e ...
... MapReduce jobs can be designed to achieve performance goals in general. Furthermore we provide guidance on how to optimise MapReduce jobs based on our experience with Hadoop. We detail the different attributes of a MapReduce job or an Hadoop cluster itself that have to be addressed to optimise the e ...
37] C. Mohan and F. Levine. ARIES/IM an e cient
... 1, 4, 32] The primary interface for both database management systems is the database programming language O++, which is based on C++. A few facilities have been added to C++ to make it suitable for database applications. O++ provides facilities for creating persistent objects which are stored in the ...
... 1, 4, 32] The primary interface for both database management systems is the database programming language O++, which is based on C++. A few facilities have been added to C++ to make it suitable for database applications. O++ provides facilities for creating persistent objects which are stored in the ...
SbyS databases 2013_Layout 1
... If, in the course of your work, you need to keep track of large amounts of data and that data is constantly changing or being updated, then a database will save time and reduce errors. For example, a school principal could use a database to store information about students and subjects. This databas ...
... If, in the course of your work, you need to keep track of large amounts of data and that data is constantly changing or being updated, then a database will save time and reduce errors. For example, a school principal could use a database to store information about students and subjects. This databas ...
Cathedron Manual
... ... Model-Driven Development refers to a range of development approaches that are based on the use of software modeling as a primary form of expression. Sometimes models are constructed to a certain level of detail, and then code is written by hand in a separate step. Sometimes complete models are b ...
... ... Model-Driven Development refers to a range of development approaches that are based on the use of software modeling as a primary form of expression. Sometimes models are constructed to a certain level of detail, and then code is written by hand in a separate step. Sometimes complete models are b ...
ch08 - kuroski.net
... History Auditing Model Implementation Using Oracle (continued) • Steps: – Use any user other than SYSTEM or SYS; with privileges to create tables, sequences, and triggers – Create history table – Create the trigger to track changes and record all the values of the columns – Test your implementation ...
... History Auditing Model Implementation Using Oracle (continued) • Steps: – Use any user other than SYSTEM or SYS; with privileges to create tables, sequences, and triggers – Create history table – Create the trigger to track changes and record all the values of the columns – Test your implementation ...
InterSystems Caché Database Mirroring
... (sometimes referred to as Pick applications). Other languages, such as Java, C#, and C++, are supported through direct call-in and other interfaces, including ODBC, JDBC, .NET, and a Caché-provided object interface that allows accessing the Caché database and other Caché facilities as properties and ...
... (sometimes referred to as Pick applications). Other languages, such as Java, C#, and C++, are supported through direct call-in and other interfaces, including ODBC, JDBC, .NET, and a Caché-provided object interface that allows accessing the Caché database and other Caché facilities as properties and ...
Administrator`s Getting Started Guide
... Use, duplication, or disclosure by the Government is subject to restrictions as set forth in subparagraph (C)(1)(ii) of the Rights in Technical Data and Computer Software clause at DFARS 252.227-7013. Manufacturer is: ...
... Use, duplication, or disclosure by the Government is subject to restrictions as set forth in subparagraph (C)(1)(ii) of the Rights in Technical Data and Computer Software clause at DFARS 252.227-7013. Manufacturer is: ...
- Courses - University of California, Berkeley
... be used to build some desired relation from the database. • Relational Calculus provides a notation for formulating the definition of that desired relation in terms of the relations in the database without explicitly stating the operations to be performed • SQL is based on the relational calculus. ...
... be used to build some desired relation from the database. • Relational Calculus provides a notation for formulating the definition of that desired relation in terms of the relations in the database without explicitly stating the operations to be performed • SQL is based on the relational calculus. ...
MYCH3
... 1. Give an example of an attribute (or set of attributes) that you can deduce is not a candidate key, if this instance is legal. 2. Is there any example of an attribute (or set of attributes) that you can deduce is a candidate key? 3. Does every relational schema have some candidate key? Database Ma ...
... 1. Give an example of an attribute (or set of attributes) that you can deduce is not a candidate key, if this instance is legal. 2. Is there any example of an attribute (or set of attributes) that you can deduce is a candidate key? 3. Does every relational schema have some candidate key? Database Ma ...
Teaching Scheme Business Information Technology/Software
... query optimisation particularly important in a DDB environment? What are the alternative ways of joining distibuted tables? How does a semi-join work? Reading: Bell(Chapter 5), Silberschatz(Chapter 19), Ozsu(Chapter 7, 8 and 9), Connolly(Chapter 22 and 23) Extendible Hashing 1(SMcK) Lecture Review — ...
... query optimisation particularly important in a DDB environment? What are the alternative ways of joining distibuted tables? How does a semi-join work? Reading: Bell(Chapter 5), Silberschatz(Chapter 19), Ozsu(Chapter 7, 8 and 9), Connolly(Chapter 22 and 23) Extendible Hashing 1(SMcK) Lecture Review — ...
Using SQL Queries to Generate XML
... specify whether data appears as attribute node values, text node values, or a combination of both. It also provides an alternate way to allow developers to specify node names. This option makes queries much more difficult to configure, but provides a much higher degree of control over the query outp ...
... specify whether data appears as attribute node values, text node values, or a combination of both. It also provides an alternate way to allow developers to specify node names. This option makes queries much more difficult to configure, but provides a much higher degree of control over the query outp ...
Honored Guests Database
... honored guests into an A, B, C level, but only use this format internally Once the confirmations are sent, begin scheduling honored guests for award presentations and various special events. While difficult to confirm many of the honored guests early, if possible, begin the scheduling process at lea ...
... honored guests into an A, B, C level, but only use this format internally Once the confirmations are sent, begin scheduling honored guests for award presentations and various special events. While difficult to confirm many of the honored guests early, if possible, begin the scheduling process at lea ...