Equijoin - Study guides, Class notes & Summaries

WGU Data Management - Foundations - D426 Exam Questions And Answers 100% Solved 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? ...

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 C170 Study Guide (Latest 2024/ 2025 Update) Data Management Applications Exam| 100% Correct| Grade A Q: domain: In data modeling, the construct used to organize and describe an attribute's set of possible values. Q: entity integrity Answer: The property of a relational table that guarantees each entity has a unique value in a primary key and that the key has no null values. Q: equijoin Answer: A join operator that links tables based on an equality condition tha...

CS6400 - Exam 3 UPDATED ACTUAL Questions and CORRECT Answers Natural Join - CORRECT ANSWER- The result of this is the set of all combinations of tuples in R and S that are equal on their common attribute names. A special case of an equijoin. Left Outer Join - CORRECT ANSWER- A construct operator which results in the set of all combinations of tuples in R and S that are equal on their common attribute names, in addition (loosely speaking) to tuples in R that have no matching tuples in...

AREA Ans- In DB2, a named section of permanent storage space that is reserved to store the database. candidate key Ans- A minimal superkey; that is, a key that does not contain a subset of attributes that is itself a superkey. closure Ans- A property of relational operators that permits the use of relational algebra operators on existing tables (relations) to produce new relations. composite entity Ans- An entity designed to transform an M:N relationship into two 1:M relationships...

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 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 incorrect ...

WGU C170 Exam (New 2024/ 2025 Update) Data Management Applications Exam| 100% Correct| Graded A QUESTION What type of integrity is enforced when a primary key is declared? Answer: Creating a primary key constraint enforces entity integrity (i.e. no part of the primary key can contain a null and the primary key values must be unique). QUESTION What is a recursive relationship? Given an example. Answer: A recursive relationship exists when an entity is related to itse...

WGU C170 Focused on Chapter 1 Foundational Study Exam Questions with Accurate Marking Scheme 2024/2025 entity integrity - correct answer The property of a relational table that guarantees each entity has a unique value in a primary key and that the key has no null values. equijoin - correct answer A join operator that links tables based on an equality condition that compares specified columns of the tables. flags - correct answer Special codes implemented by designers to trigger a requi...

WGU C170 - Data Management – Applications Latest 2024 Already Graded A Domain In data modeling, the construct used to organize and describe an attribute's set of possible values. Primary key (PK) An identifier composed of one or more attributes that uniquely identifies a row. Also, a candidate key selected as a unique entity identifier. A minimal superkey. Key One or more attributes that determine other attributes. Determination The role of a key. In the context of a database...

C170 Data Management Application Questions with solutions 2023 AREA In DB2, a named section of permanent storage space that is reserved to store the database. associative entity See composite entity. Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:09 / 0:15 Full screen bridge entity See composite entity. candidate key A minimal superkey; that is, a key that does not contain a subset of attributes that is itself a ...