Mẹo What is a person place thing transaction or event about which information is stored?
Mẹo Hướng dẫn What is a person place thing transaction or sự kiện about which information is stored? Mới Nhất
Hoàng T Thu Thủy đang tìm kiếm từ khóa What is a person place thing transaction or sự kiện about which information is stored? được Update vào lúc : 2022-11-15 14:46:04 . Với phương châm chia sẻ Bí quyết về trong nội dung bài viết một cách Chi Tiết 2022. Nếu sau khi Read nội dung bài viết vẫn ko hiểu thì hoàn toàn có thể lại phản hồi ở cuối bài để Ad lý giải và hướng dẫn lại nha.Storing Organizational Information
Relational Database Fundamentals:
Nội dung chính Show- Storing Organizational InformationWhen data is stored in one place it means it is ________?What is a person place or thing for which data is collected stored and maintained?Which database term is a person place object sự kiện or idea?What is the duplication of data or the storage of the same data in multiple places?
- Information is everywhere in an organizationInformation is stored in databases
Database – maintains information about various types of objects (inventory), events (transactions), people (employees), and places (warehouses)
Database models include:
Hierarchical database model – information is organized into a tree-like structure (using parent/child relationships) in such a way that it cannot have too many relationships – organizational chartNetwork database model – a flexible way of representing objects and their relationshipsRelational database model – stores information in the form of logically related two-dimensional tablesEntities and Attributes:
Entity – a person, place, thing, transaction, or sự kiện about which information is stored
- The rows in each table contain the entities
Attributes (fields, columns) – characteristics or properties of an entity class
- The columns in each table contain the attributes
Keys and Relationships:
Primary keys and foreign keys identify the various entity classes (tables) in the database
Primary key – a field (or group of fields) that uniquely identifies a given entity in a tableForeign key – a primary key of one table that appears an attribute in another table and acts to provide a logical relationship between the two tables
Relational Database Advantages:
Database advantages from a business perspective include
Increased flexibility- Handle changes quickly and easilyProvide users with different viewsHave only one
physical view – đơn hàng with the physical storage of information on a storage deviceHave multiple logical views – focuses on how users logically access information
2. Increased scalability and performance
A database must scale to meet increased demand while maintaining acceptable performance levels
- Scalability – refers to how well a system can adapt to
increased demandsPerformance – measures how quickly a system
performs a certain process or transaction
3. Reduced information redundancy
Databases reduce information redundancy
- Redundancy – the duplication of information or
storing the same information in multiple places
Inconsistency is one of the primary problems with redundant information
4. Increased information integrity (quality)
Information integrity measures the quality of information. Integrity constraint rules that help ensure the quality of information
Relational integrity constraint – is used to ensure accuracy and consistency of data in a relational database.
- Users cannot create an order for a nonexistent customer.An order cannot be shipped without an address.
Business-critical integrity constraint –In database management, business-critical integrity constraints enforce a company’s rules.
5. Increased information security
Information is an organizational asset and must be protected and Databases offer several security features including:
- Password – provides authentication of the userAccess level – determines who has access to the different types of informationAccess control – determines types of user access, such as read-only access
Data-driven Web sites – an interactive Web site kept constantly updated and relevant to the needs of its customers through the use of a database. A data-driven Web site invites visitors to select and view what they are interested in by inserting a query, which the Website then analyzes and custom builds a Web page in real-time that satisfies the query.
Data-Driven Web Site Business Advantages
DevelopmentContent ManagementFuture ExpandabilityMinimizing Human ErrorCutting Production and Update CostsMore EfficientImproved StabilityData-Driven Business Intelligence (BI)
BI in a data-driven Web site – Web site can offer insight into the business, such as items browsed, frequent requests, items bought together, etc.
Integrating Information among Multiple Databases
- Integration – allows separate systems to communicate directly with each other – enter information into the systems once and it is automatically sent to all of the other systems throughout the organizationForward integration – takes information entered into a given system and sends it automatically to all downstream systems and processesBackward integration – takes
information entered into a given system and sends it automatically to all upstream systems and processes
That’s all for chapter 7. Thanks for reading! 🙂
Integrating Information among
When data is stored in one place it means it is ________?
Normalization is the process of reorganizing data in a database so that it meets two basic requirements: There is no redundancy of data, all data is stored in only one place.What is a person place or thing for which data is collected stored and maintained?
An entity is a person, place, thing, or sự kiện on which we store and maintain information. An order is a typical entity in a sales order file, which maintains information on a firm's sales orders. Each characteristic or quality describing a particular entity is called an attribute.Which database term is a person place object sự kiện or idea?
An entity is a person, place, object, sự kiện, or idea for which you want to store the process data.What is the duplication of data or the storage of the same data in multiple places?
Data redundancy occurs when the same piece of data is stored in two or more separate places and is a common occurrence in many businesses. Tải thêm tài liệu liên quan đến nội dung bài viết What is a person place thing transaction or sự kiện about which information is stored? Khỏe Đẹp Son
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