WGU D426 (D426)

The relationship (within the relation) that describes how the value of one attribute may be used to find the value of another attribute. Functional Dependency An attribute that can be used to find the value of another attribute in the relation. Determinant Value can be used to find the value of every other non-key attribute in the table. Unique and minimal. Candidate Key Define & manage database structures DDL Adding, deleting, and modifying data - Manipulates data stored in a database...

What Is a software that reads and writes data in a database? Database management system or DBMS What is a computer programming language for writing database queries? Query language What is a command for a database that typically inserts new data, retrieves data, updates data, or deletes data from a database Query What is a group of queries that must be either completed or rejected as a whole? A transaction What Interprets queries, creates a plan to modify the database or retrieve data, ...

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 authorize individual users to access specific data. Rules - Database systems ...

Storage Manager - Translates the query processor instructions into low-level filesystem commands that modify OR retrieve data. Uses indexes to quickly locate data. Third Normal Form (3NF) - All non-key columns depend on the key, the whole key, and nothing but the key. Domain - A named set of possible database values, such as integers, dictionary words, or logical values (TRUE and FALSE). Boyce-Codd Normal Form - What normal form am I? A table is in this normal form if whenever column A d...

The relationship (within the relation) that describes how the value of one attribute may be used to find the value of another attribute. Functional Dependency An attribute that can be used to find the value of another attribute in the relation. Determinant Value can be used to find the value of every other non-key attribute in the table. Unique and minimal. Candidate Key Define & manage database structures DDL Adding, deleting, and modifying data - Manipulates data stored in a database...

WGU D426 PRE-ASSESSMENT: DATA MANAGEMENT - FOUNDATIONS PRACTICE ASSESSMENT

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

data numeric, textural, visual or audio information that describes real-world systems. Collected and processes to aid in variety of tasks scope amt of data produced and collected vary format data may be produced as numbers, text, image, or audio access some data sources are private while others are made publicly available analog encoded as continuous variations on physical media digital binary on electronic or magnetic media database collection of data in structured format databas...

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

Which requirement within large, complex databases ensures users have limited access to the database? Authorization Which design type specifies database requirements without regard to a specific database system? Conceptual design / analysis phase What characterizes the rules of relational databases? They are logical constraints that ensure the data is valid. Which event will result in an error code and error description when using MySQL Server? When an SQL statement is syntactically inc...