Data Warehousing
... Representation of Data in DW • Dimensional Modeling – a retrieval-based system that supports high-volume query access • Star schema – the most commonly used and the simplest style of dimensional modeling – Contain a fact table surrounded by and connected to several dimension tables – Fact table con ...
... Representation of Data in DW • Dimensional Modeling – a retrieval-based system that supports high-volume query access • Star schema – the most commonly used and the simplest style of dimensional modeling – Contain a fact table surrounded by and connected to several dimension tables – Fact table con ...
Introduction to Database Systems
... concurrent access, quick application development, data integrity and security Levels of abstraction give data independence A DBMS typically has a layered architecture DBAs hold responsible jobs and are ...
... concurrent access, quick application development, data integrity and security Levels of abstraction give data independence A DBMS typically has a layered architecture DBAs hold responsible jobs and are ...
soumen_cse.iitb.ernet.in
... • OEM (Object Exchange Model): a semistructured data model from Stanford, 1995 • Lore: a system for storing data adhering to the OEM • Lorel: a query language for Lore ...
... • OEM (Object Exchange Model): a semistructured data model from Stanford, 1995 • Lore: a system for storing data adhering to the OEM • Lorel: a query language for Lore ...
Introduction to Database Concepts
... Other Capabilities of DBMS Systems • Transaction management which is the capability to provide correct, concurrent access to the database by many users at the same time – ability to manage simultaneously large numbers of “transactions” • procedures operating on the database • often transactions com ...
... Other Capabilities of DBMS Systems • Transaction management which is the capability to provide correct, concurrent access to the database by many users at the same time – ability to manage simultaneously large numbers of “transactions” • procedures operating on the database • often transactions com ...
Slide 1
... Refers to immunity of conceptual schema to changes in the internal schema. Internal schema changes (e.g. using different file organizations, storage structures/devices). Should not require change to conceptual or external schemas. ...
... Refers to immunity of conceptual schema to changes in the internal schema. Internal schema changes (e.g. using different file organizations, storage structures/devices). Should not require change to conceptual or external schemas. ...
Oracle RDF Data Model
... • A table function allows a graph query to be embedded in a SQL query • Searches for an arbitrary pattern against the RDF data • Includes inferencing based on RDF, RDFS, and ...
... • A table function allows a graph query to be embedded in a SQL query • Searches for an arbitrary pattern against the RDF data • Includes inferencing based on RDF, RDFS, and ...
Relational Databases for the Business Analyst
... The role of a RDBMS in the enterprise is to allow the business to store information about it’s customers, transactions, inventory, manufacturing processes, etc Once data has been collected it becomes the basis for all business activity Data can then be reported on, managed, updated as new informatio ...
... The role of a RDBMS in the enterprise is to allow the business to store information about it’s customers, transactions, inventory, manufacturing processes, etc Once data has been collected it becomes the basis for all business activity Data can then be reported on, managed, updated as new informatio ...
Fact table - WordPress.com
... de-normalized into dimension and fact tables which are typical to a data warehouse database design. The differences in the database architectures are caused by different purposes of their existence. In a typical OLTP system the database performance is crucial, as end-user interface responsiveness is ...
... de-normalized into dimension and fact tables which are typical to a data warehouse database design. The differences in the database architectures are caused by different purposes of their existence. In a typical OLTP system the database performance is crucial, as end-user interface responsiveness is ...
Effective Keyword-Based Selection of Relational Databases
... recall – compares the accumulated score of the top l databases selected based on the summaries of the source databases against the total available score when we select top l databases according to real ranking (summaries vs. real ranking) precision – measures the fraction of the top l selected datab ...
... recall – compares the accumulated score of the top l databases selected based on the summaries of the source databases against the total available score when we select top l databases according to real ranking (summaries vs. real ranking) precision – measures the fraction of the top l selected datab ...
Slide 1
... between database & file based system. Be able to understand the database concepts. Be able to understand the objective of DBMS and its uses. Be able to understand the normalization Be able to build Databases and manage it using Oracle. ...
... between database & file based system. Be able to understand the database concepts. Be able to understand the objective of DBMS and its uses. Be able to understand the normalization Be able to build Databases and manage it using Oracle. ...
The ER Database Model - Department of Computer Science
... databases in his paper "A Relational Model of Data for Large Shared Data Banks" in 1970. He was using the term "relation" in the strict mathematical sense of a table with a few special properties. Thus Codd was describing a system where all of the database - data, structure, rules - is housed in sim ...
... databases in his paper "A Relational Model of Data for Large Shared Data Banks" in 1970. He was using the term "relation" in the strict mathematical sense of a table with a few special properties. Thus Codd was describing a system where all of the database - data, structure, rules - is housed in sim ...
The ER Database Model - Department of Computer Science
... databases in his paper "A Relational Model of Data for Large Shared Data Banks" in 1970. He was using the term "relation" in the strict mathematical sense of a table with a few special properties. Thus Codd was describing a system where all of the database - data, structure, rules - is housed in sim ...
... databases in his paper "A Relational Model of Data for Large Shared Data Banks" in 1970. He was using the term "relation" in the strict mathematical sense of a table with a few special properties. Thus Codd was describing a system where all of the database - data, structure, rules - is housed in sim ...
Physical Database Design Presentation
... Issues in indexing Indexes affect table maintenance performance. Each time an add or delete is performed, the index must be updated along with the data. Depending on the size of the database, these index updates can be extremely time-consuming. Imagine the problems with having an index declared for ...
... Issues in indexing Indexes affect table maintenance performance. Each time an add or delete is performed, the index must be updated along with the data. Depending on the size of the database, these index updates can be extremely time-consuming. Imagine the problems with having an index declared for ...
Jerry Held
... Oracle9i provides the new CONFIGURE command to override default settings persistently. The configuration values are stored in the control file and are resynchronized to the recovery catalog ...
... Oracle9i provides the new CONFIGURE command to override default settings persistently. The configuration values are stored in the control file and are resynchronized to the recovery catalog ...
DATC01 - Business Intelligence For The Relational Expert
... Open, integrated, and based on industry standards ...
... Open, integrated, and based on industry standards ...
Lesson 2: Structure a Database
... You can add a new field, change the order of the fields, change the field type, and change the field’s caption, or column heading. ...
... You can add a new field, change the order of the fields, change the field type, and change the field’s caption, or column heading. ...
Database Administration
... mysqldump Backup (Preferred Method) Creating mysqldump Backups Description: The SQL commands used to create the tables and the data can be redirected to a file. That file can then be used to rebuild the database. Syntax: mysqldump –u user –p db_name mysqldump –u user –p db_name table_name ...
... mysqldump Backup (Preferred Method) Creating mysqldump Backups Description: The SQL commands used to create the tables and the data can be redirected to a file. That file can then be used to rebuild the database. Syntax: mysqldump –u user –p db_name mysqldump –u user –p db_name table_name ...
- CSE PSTU
... a. an understanding of the needs for and uses of database management systems in business; b. an understanding of the context, phases and techniques for designing and building database information systems in business; c. an understanding of the components of a computerized database information system ...
... a. an understanding of the needs for and uses of database management systems in business; b. an understanding of the context, phases and techniques for designing and building database information systems in business; c. an understanding of the components of a computerized database information system ...
Limitations of the Relational Model
... Assume that every Employee has an employee number. Then every Teacher and every Student Instructor has an employee number also, but this is not necessarily the case for Persons or Students. ...
... Assume that every Employee has an employee number. Then every Teacher and every Student Instructor has an employee number also, but this is not necessarily the case for Persons or Students. ...
Distributed Databases
... The geographically distant business units of an organization can have autonomy for creating and managing their own info systems. ...
... The geographically distant business units of an organization can have autonomy for creating and managing their own info systems. ...
Database Design - KBU ComSci by
... Physical Database Design Physical database design is the procedure of ...
... Physical Database Design Physical database design is the procedure of ...
Database Administration
... mysqldump Backup (Preferred Method) Creating mysqldump Backups Description: The SQL commands used to create the tables and the data can be redirected to a file. That file can then be used to rebuild the database. Syntax: mysqldump –u user –p db_name mysqldump –u user –p db_name table_name ...
... mysqldump Backup (Preferred Method) Creating mysqldump Backups Description: The SQL commands used to create the tables and the data can be redirected to a file. That file can then be used to rebuild the database. Syntax: mysqldump –u user –p db_name mysqldump –u user –p db_name table_name ...