Relational databases are - Study guides, Class notes & Summaries

database model correct answers A database model is a conceptual framework for database systems, with three parts: 1. Data structures that prescribe how data is organized. 2. Operations that manipulate data structures. 3. Rules that govern valid data. relational model correct answers The relational model is a database model based on a tabular data structure. The model was published in 1970 by E. F. Codd of IBM and released in commercial products around 1980. The data structure, operations, and...

Which requirement within large, complex databases ensures users have limited access to the database? Recovery Performance Authorization Confidentiality Authorization Which design type specifies database requirements without regard to a specific database system? Physical design Conceptual design Logical design Abstract design Conceptual design 3. What characterizes the rules of relational databases? -They are logical constraints that ensure the data is valid. -They are...

WGU Data Management - Foundations - D426 Latest Update Already Passed Which requirement within large, complex databases ensures users have limited access to the database? Recovery Performance Authorization Confidentiality Authorization Which design type specifies database requirements without regard to a specific database system? Physical design Conceptual design Logical design Abstract design Conceptual design 3. What characterizes the rules of relational databases? -T...

D426 WGU Data Management - Foundations Real Exam with Complete Solutions…Grade A+ 1. Which requirement within large, complex databases ensures users have limited access to the database? Recovery Performance Authorization Confidentiality: Authorization 2. Which design type specifies database requirements without regard to a specific database system? Physical design Conceptual design Logical design Abstract design: Conceptual design 3. 3. What characterizes the rules of relational ...

WGU - D426: Objective Assessment|A+ Graded Questions with Complete Answers Database Application Software that helps business users interact with database systems. Database Administrator Responsible for securing the database system against unauthorized users. A database administrator enforces procedures for user access and database system availability. Authorization Many database users should have limited access to specific tables, columns, or rows of a database. Database systems au...

WGU C724 Information Systems Management Unit 4 Test A tuple is one record or data set in a row -Answer-What are tuples and how are they used in databases? a.) A tuple is a collection of sequenced data fields b.) A tuple is one record or data set in a row c.) A tuple is a database field The flat file design is a single table database -Answer-What is the best description of a flat file database? a.) Flat file databases are hierarchical in nature. b.) Flat file databases are prevalent tod...

D427 Question and answers correctly solved 2024 D427 - Data Management Relational data structure - correct answer A table has a name, a fixed tuple of columns, and varying sets of rows. A column has a name and a data type. A row is a unnamed set of values. Each corresponds to a column and belongs to the columns data type. A data type is a name set of values, from which column values are drawn. Similar concepts in databases - correct answer DATABASES MATHEMATICS FILES table ...

WGU D075 Final Exam Review (Latest 2024/ 2025 Update) Information Technology Management Essentials | Qs & As| 100% Correct| Grade A Q: When was the internet born? Answer: Sometime around 1969, the internet was born. However, the internet did not really catch on until the early 90s when Hypertext Markup Language (HTML), Hypertext Transfer Protocol (HTTP), and web browsers became available to people and businesses alike. Q: What are switches, routers, and hubs? Answer: Swit...

WGU C175 Data Management – Foundations Final Exam Set (Latest 2023/ 2024 Update) Questions and Verified Answers- Already Grade A| 100% Correct Q: What are the three phases of database design for large complex databases? Answer: analysis logical design physical design Q: What are the alternative names used to describe the Analysis phase? Answer: conceptual design entity-relationship modeling and requirements Q: How are requirements of a DBMS represented? ...

Software that helps business users interact with database systems. - Answer-Database Application Responsible for securing the database system against unauthorized users. A database administrator enforces procedures for user access and database system availability. - Answer-Database Administrator Many database users should have limited access to specific tables, columns, or rows of a database. Database systems authorize individual users to access specific data. - Answer-Authorization Databa...