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COMM 190 (19)
Chapter 5

Chapter 5 notes.docx

4 Pages

Course Code
COMM 190
Yasmeen Mufti

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Chapter 5: Database and Content Management (Q1 to Q7) Q1. What is Content? - Content is property, close to o Intellectual property: form of creative endeavor that can be protected through a trademark, patent, copyright, industrial design or integrated circuit topography - Challenge: not collecting & distributing, but presenting it appropriately for various stakeholders inside and outside of organizations Q2. How Can Content Be Organized? - Challenge: indexing or cataloguing the right information, processing & storing it, and then getting it to the right person in the right format at the right time - Separate management of content data from the presentation of content - Data management: efficiently and effectively store and process bytes through organizational database management systems (DBMS) -> central - Content management system (CMS): when an employee wants to place some content on the organization’s web site, he/she will access this o Located on the company’s website server o Employee loads content into CMS, copy editor reviews, passes it to layout artists who prepares content for presentation (stored with help of DBMS), manager will review and publish -> web CMS manages each step and offers a standardized look o Grown from organizing documents for corporate websites to seeking out documents and automatically manage access o Example: Open Text and EMC Q3. What Is the Purpose of a Database? - Lists for single theme: spreadsheet, lists for multiple themes: databases - Purpose of a database: to keep track of things that involve more than one theme Q4. What Does a Database Contain? - Database: self-describing collection of integrated records - Hierarchy of data elements: o Byte: character of data, grouped into columns/fields, grouped into rows/records, grouped into tables/files - Database ≠ group of tables/files - Database = collection of tables plus relationships among the rows in those tables plus special data called metadata Relationships among Records - Key: column or group of columns that identifies a unique row in a table o Ex: EmailNum for Email Table, Student Number for Student table, can’t be student Number for Email Table because students can email more than once therefore Student Number wouldn’t be unique - Foreign keys: columns are key, but for a different (foreign) table o Ex: Student Number for the Email Table - Relationship databases: databases that carry their data in the form of tables and represents relationships using foreign keys (another name for a table is relation) Metadata - “Self-describing” means that a database contains, within itself, a description of its contents o Ex: library - Metadata: data that describe data - Databases more useful than spreadsheets, because you don’t have to guess/remember/record what is in the database with metadata Q5. What Is a DBMS, and What Does It Do? - Database application system: makes databa
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