Subquery - Study guides, Class notes & Summaries

A relational database _____. - Answer- consists of tables called relations Which command(s) can you use to delete an entire table and its data? - Answer- DROP TABLE Which element belongs in the blank if you want to display data from all rows with a credit limit greater than the credit limit of one or more category B cardholders? WHERE (CREDIT_LIMIT > _____ (SELECT CREDIT_LIMIT FROM CARDHOLDER WHERE CATEGORY = 'B')) - Answer- ANY Which of the following is a valid SQL command? - Ans...

Associative Entity An associative entity is an element of the entity-relationship model. All relationships for the associative entity should be many. Attribute An attribute is a property or characteristic of an entity. Binary relationship A binary relationship is a relationship between two entity types. Candidate Key Is any column or a combination of columns that can qualify as unique key in database. Cardinality Cardinality represents the maximum number of entities that can be involved in...

WGU C170 SQL Data Management Exam Questions Terms with Accurate Answers 2024/2025 cross join - correct answer cartesian product of T1 and T2 USING - correct answer returns only rows with matching values in column indicated ON - correct answer returns rows that meet specified join condition subquery can return: - correct answer single value (1 column, 1 row) list of values (1 column, multiple rows) virtual table (multicolumn, multirow) union - correct answer combines 2 simila...

Data Management Foundation C175 WGU Latest Version 100% Pass Associative Entity An associative entity is an element of the entity-relationship model. All relationships for the associative entity should be many. Attribute An attribute is a property or characteristic of an entity. Binary relationship A binary relationship is a relationship between two entity types. Candidate Key Is any column or a combination of columns that can qualify as unique key in database. Cardinality Cardinality re...

Associative Entity An associative entity is an element of the entity-relationship model. All relationships for the associative entity should be many. Attribute An attribute is a property or characteristic of an entity. Brainpower Read More Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:11 / 0:15 Full screen Binary relationship A binary relationship is a relationship between two entity types. Candidate Key Is any column or a combinatio...

DDL (Data Definition Language) Correct Answer: commands to create database objects such as tables, indexes, and views, as well as commands to define access rights to those objects DML (Data Manipulation Language) Correct Answer: commands to insert, update delete and retrieve data within database tables Type of integrity is enforced when a primary key is declared Correct Answer: Entity, in create table command sequence referential constraint actions Correct Answer: Makes sure that if a p...

join - relational operation that causes two or more tables with a common domain to be combined into a single table or view - can use "JOIN" or "INNER JOIN"..."ON" - common columns appear redundantly in the result table - can use "=", ">","<" ,"<>" equi-join - join in which the joining condition is based on equality between values in the common columns natural join - equi-join in which one of the duplicate columns is eliminated in the result table outer join ...

CSC 345 Lab 5-1 Exam | Questions with Verified Answers Task 1: For each invoice, list the invoice number and invoice date along with the ID, first name, and last name of the customer for which the invoice was created. SELECT INVOICE_NUM, INVOICE_DATE, CUSTOMER.CUST_ID, FIRST_NAME, LAST_NAME FROM INVOICES, CUSTOMER WHERE INVOICES.CUST_ID = CUSTOMER.CUST_ID; Task 2: For each invoice placed on November 15, 2021, list the invoice number along with the ID, first name, and last name of the customer...

CREATE TABLE AS - ️️Creates a new table based on a query in the user's database schema SELECT Syntax - ️️Command to list the content SELECT columnlist FROM tablename; Data definition language - ️️DDL Data manipulation language - ️️DML CREAT SCHEMA AUTHORIZATION - ️️Creates a database schema CREATE TABLE - ️️Creates a new table in the user's databse schema NOT NULL - ️️Ensures that a column will not have null values UNIQUE - ️️Ensures that a column w...

Associative Entity - Answer An associative entity is an element of the entity-relationship model. All relationships for the associative entity should be many. Attribute - Answer An attribute is a property or characteristic of an entity. Binary relationship - Answer A binary relationship is a relationship between two entity types. Candidate Key - Answer Is any column or a combination of columns that can qualify as unique key in database. Cardinality - Answer Cardinality repr...