Document
... Null Values It is possible for tuples to have a null value, denoted by null, for some ...
... Null Values It is possible for tuples to have a null value, denoted by null, for some ...
Object Oriented & Object Relational Databases
... Includes all the modeling concepts of ER Additionally includes oo concepts of – subclass, superclass, specialization and generalization, attribute and relationship inheritance ...
... Includes all the modeling concepts of ER Additionally includes oo concepts of – subclass, superclass, specialization and generalization, attribute and relationship inheritance ...
The Relational versus Hierarchical Database Debate Continues
... logical structures are independent. However, the software uses both structures to store data in an efficient manner and to access data based on both the values and the relationships among the data. The database does not consist of a data structure alone. Data structures alone are not particuiarly in ...
... logical structures are independent. However, the software uses both structures to store data in an efficient manner and to access data based on both the values and the relationships among the data. The database does not consist of a data structure alone. Data structures alone are not particuiarly in ...
Lecture Notes in Computer Science:
... Currently relational database system is a major tool for data storing and managing due to it provides strong mechanisms for quick processing of large amounts of data. But, from the other hand, dew to high complexity of applications in question, one developer is not able to keep in mind all details o ...
... Currently relational database system is a major tool for data storing and managing due to it provides strong mechanisms for quick processing of large amounts of data. But, from the other hand, dew to high complexity of applications in question, one developer is not able to keep in mind all details o ...
Transactional Replication
... ◦ “Replication is the process of sharing information between databases (or any other type of server) to ensure that the content is consistent between systems. ” ...
... ◦ “Replication is the process of sharing information between databases (or any other type of server) to ensure that the content is consistent between systems. ” ...
Document
... Graph-based ranking models have been widely applied in information retrieval area. In this paper, we focus on a well known graph-based model - the Ranking on Data Manifold model, or Manifold Ranking (MR). Particularly, it has been successfully applied to content-based image retrieval, because of its ...
... Graph-based ranking models have been widely applied in information retrieval area. In this paper, we focus on a well known graph-based model - the Ranking on Data Manifold model, or Manifold Ranking (MR). Particularly, it has been successfully applied to content-based image retrieval, because of its ...
Presentation Guidelines
... • Over 10 years experience in database administration, architecture and development. ...
... • Over 10 years experience in database administration, architecture and development. ...
Oracle Database
... Is the database in read-only mode? If table correlation names are supported (association of a column with the table it comes from, when multiple columns of the same name appear in the same query - multi-table queries) , are they restricted to be different from the names of the tables? • and so on… ...
... Is the database in read-only mode? If table correlation names are supported (association of a column with the table it comes from, when multiple columns of the same name appear in the same query - multi-table queries) , are they restricted to be different from the names of the tables? • and so on… ...
PPT
... • Basic message-passing mechanisms provide for a bytestream only. • Must implement various protocols on top of this ...
... • Basic message-passing mechanisms provide for a bytestream only. • Must implement various protocols on top of this ...
Database Administration Presentation
... Allows users to change their passwords. Can also be used to change other attributes of a user. Removes privileges on an object from a user, users, or role. ...
... Allows users to change their passwords. Can also be used to change other attributes of a user. Removes privileges on an object from a user, users, or role. ...
Oracle Database10g: Administration Workshop I
... store them for a medium length of time: – Retail billing system, for example, of a software house or a nursery ...
... store them for a medium length of time: – Retail billing system, for example, of a software house or a nursery ...
Discovering the Objectual Meaning of Foreign Key Constraints in
... and tools that help an organization determine the structure, function, and meaning of its data [6]. DRE is a complex and expensive task and needs to be supported by program understanding and tools [7]. In this paper we propose a novel approach for capturing the semantics of the relations between the ...
... and tools that help an organization determine the structure, function, and meaning of its data [6]. DRE is a complex and expensive task and needs to be supported by program understanding and tools [7]. In this paper we propose a novel approach for capturing the semantics of the relations between the ...
Design and Implementation of Spiral Database For Health Centers
... understanding of relational data modeling, its purpose, its nature, and the standards used in creating relational data model. Relational databases are the most popular database management systems in the world and are supported by a variety of vendor implementations. Majority of the practical tasks i ...
... understanding of relational data modeling, its purpose, its nature, and the standards used in creating relational data model. Relational databases are the most popular database management systems in the world and are supported by a variety of vendor implementations. Majority of the practical tasks i ...
Relational XML-PPT
... The paper proposes three order encoding methods (Global Order, Local Order, and Dewey Order) to represent XML order in the relational data model. The paper will also answer the question of when and why to use which encoding method. ...
... The paper proposes three order encoding methods (Global Order, Local Order, and Dewey Order) to represent XML order in the relational data model. The paper will also answer the question of when and why to use which encoding method. ...
Database Security in an Enterprise Environment
... principles and ideas Focus on Oracle as a common DBMS, but realize there are similar issues for other DBMSs ...
... principles and ideas Focus on Oracle as a common DBMS, but realize there are similar issues for other DBMSs ...
BioSem
... Consider the PD case study that used ontological approach to querying distributed databases. Discuss 10 reasons of using this approach as opposed to common SQL query and relational database approach. Why is Google, Yahoo or MSN search not good enough for searching biological database? Discuss centra ...
... Consider the PD case study that used ontological approach to querying distributed databases. Discuss 10 reasons of using this approach as opposed to common SQL query and relational database approach. Why is Google, Yahoo or MSN search not good enough for searching biological database? Discuss centra ...
Chapter 8 - Spatial Database Group
... Rule 8: Avoid indexes on combinations of columns. Most optimization components can use multiple indexes on the same table. ...
... Rule 8: Avoid indexes on combinations of columns. Most optimization components can use multiple indexes on the same table. ...
2. Data (horizontal) - NDSU Computer Science
... update (always just 1 copy to worry about, ZERO REDUNDANCY!) network approach: fast processing, complicated structure (usually requires data processing shop) Again, it favors one workload type over others. Section 2 # 17 ...
... update (always just 1 copy to worry about, ZERO REDUNDANCY!) network approach: fast processing, complicated structure (usually requires data processing shop) Again, it favors one workload type over others. Section 2 # 17 ...
MS ACCESS (part-1) VIVA QUESTIONS(MS ACCESS) Primary key
... b) Microsoft SQL server desktop engine is embedded into the Access suite along with Jetdata base engine which can further help you in programming. c)MS Access allows forms to contain data which is altered as changes are made to the underlying table. d)It has features which support the creation of al ...
... b) Microsoft SQL server desktop engine is embedded into the Access suite along with Jetdata base engine which can further help you in programming. c)MS Access allows forms to contain data which is altered as changes are made to the underlying table. d)It has features which support the creation of al ...
Tutorial
... At client site, create ODBC System DSN for SQL server connection Design Access database at client site Export tables from Access client to SQL server Dynamic link Access to ODBC SQL server database ...
... At client site, create ODBC System DSN for SQL server connection Design Access database at client site Export tables from Access client to SQL server Dynamic link Access to ODBC SQL server database ...
Fakhreddine El Mourabiti
... • 200+ pre-configured templates for all major OS/DBMS configurations – Easily customizable via scripts, SQL, etc. (ad hoc tests) – Also checks OS permissions for Vulnerability Assessment (VA) tests ...
... • 200+ pre-configured templates for all major OS/DBMS configurations – Easily customizable via scripts, SQL, etc. (ad hoc tests) – Also checks OS permissions for Vulnerability Assessment (VA) tests ...
Lecture9 - The University of Texas at Dallas
... Inference Control for Semantic Web - II Semantic web has reasoning capabilities Based on several logics including descriptive logics Inferencing is key to the operation of the semantic web Need to build inference controllers that can handle different ...
... Inference Control for Semantic Web - II Semantic web has reasoning capabilities Based on several logics including descriptive logics Inferencing is key to the operation of the semantic web Need to build inference controllers that can handle different ...
Slide I
... Problems with file-based approach. Meaning of the term database. Meaning of the term Database Management System (DBMS). ...
... Problems with file-based approach. Meaning of the term database. Meaning of the term Database Management System (DBMS). ...
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.