PPT-The Entity-Relationship Model

Chapter 2 Overview of Database Design Conceptual design ER Model is used at this stage What are the entities and relationships in the enterprise Students sign up for . . Centric. . Coreference Resolution with Model Stacking. Kevin Clark and Christopher D. Manning. (ACL-IJCNLP 2015). (Tables are taken from the above-mentioned paper). Presented by Mamoru Komachi. <komachi@tmu.ac.jp>. Joe Meehean. 1. Entity Relationship Model. Entity type. an object (noun). e.g., student. attributes (e.g., last name). Relationship. association between entity types. bidirectional relationship between entities. Eric Nelson . eric.nelson@microsoft.com. http://geekswithblogs.net/iupdateable. . . http://twitter.com/ericnel. . Developer Evangelist. Microsoft UK. Session Code: DEV305. Agenda. Quick recap of the journey so far. Sujan. Perera. 1. , Pablo Mendes. 2. , Amit Sheth. 1. , . Krishnaprasad. Thirunarayan. 1. , . Adarsh. Alex. 1. , Christopher Heid. 3. , Greg Mott. 3. 1. Kno.e.sis Center, Wright State University, . Entity. “An . entity. is a business object that represents a group, or category of data.”. 1. Do we know a similar concept? . 1) Stephens, R.K. and Plew. R.R., 2001. . Database Design. . SAMS, Indianapolis , IN.. 2. Outline. Data Modeling: Big picture. E-R Model. Attributes. types. Relationships. connectivity, cardinality. strength, participation, degree. Entities. composite entity. supertype/subtype. Table Normalization. Chapter 8 Outline. Subclasses, Superclasses, and Inheritance. Specialization and Generalization. Constraints and Characteristics of Specialization and Generalization Hierarchies. Modeling of UNION Types Using Categories. Requirements & collection analysis. Conceptual Design. Data Model Mapping. Physical Design. Database Requirements. Conceptual Schema (in a high-level data model). DBMS independent. DBMS specific. Modeling:. 1. CIS . 4365 . Entity Relationship Diagrams. Part 2. Your Individual Project. 2. CIS 4365 . Entity . Relationship Diagrams. We will develop the ERD as a class; you must execute complete the project . Spring 2011. Instructor: Hassan . Khosravi. Database Modeling and . implemnation. process. Ideas. High-Level . Design. Relational Database. Schema. Relational. DBMS. The Entity/Relationship Model . Data Modeling What are you keeping track of? You begin to develop a database by deciding what you are going to keep track of. Each “thing” that you are want to keep track becomes an entity in your database. Data Management 02 Conceptual Design Matthias Boehm Graz University of Technology, Austria Computer Science and Biomedical Engineering Institute of Interactive Systems and Data Science BMVIT endowed chair for Data Management Pankaj. . Vanwari. . Under guidance of . Dr. S. . Sudarshan. . Overview of Presentation. Introduction to Entity Queries. Keyword search on structured data. Querying over unstructured data. Entity queries using ontology based extraction. Queries . Using . an . Extended . Graph Model. Ankur. . Agrawal. . S. Sudarshan . Ajitav. . Sahoo. . Adil. . Sandalwala. . Prashant. . Jaiswal. . IIT . Bombay. History of Keyword Queries.