sans gfact sql quiz questions latest update 2024 2
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SANS GFACT SQL Quiz Questions Latest Update 2024 -2025 Actual Exa m Questions and 100% Verified Correct Answers Guaranteed A+ a LEFT JOIN includes matching results from the first table and all results from the second table - CORRECT ANSWER: False - the RIGHT JOIN command includes matching results from the first table and all results from the second table Database fields do not have to have a defined datatype, like they do in programming - CORRECT ANSWER: False - Each field must have a specified datatype. SQL is a structured database, so each field has a static type. Operators UNION, IN, LIKE and SOME are examples of Comparison operators - CORRECT ANSWER: False - These are Logical operators Scripting table creation must be done with a scripting language like Python - CORRECT ANSWER: False - You can combine command into a single script to automate the creation and insertion of tables. The 'WHERE' SQL command is used to filter data that meet certain criteria. - CORRECT ANSWER: True - The `WHERE` clause helps us to filter records to only the ones that match a certain condition, i.e.the defined value within a database column The `default NULL` constraint means that if no value is entered into this field for a row then the value defaults to an empty field. - CORRECT ANSWER: False - The `default NULL` constraint means that if no value is entered into this field for a row then the value defaults to `NULL`. The `EXISTS` operator checks for the existence of records in a subquery before the subquery is evaluated - CORRECT ANSWER: False - The 'EXISTS' operator evaluates subqueries after all the subqueiries are evaluated The CONSTRAINTS operator is used to define rules for a field in a table - CORRECT ANSWER: False - There is no CONSTRAINT operator, rather we use commands like FOREIGN KEY, PRIMARY KEY or REFERENCES The data in non -relational databases is structured, just like relational databases. - CORRECT ANSWER: False - Non-relational databases are for use when the kind of data is not known, and/or if the type of data changes frequently. The first table in a LEFT JOIN will always have all of its records returned in the query no matter what the condition of the join is - CORRECT ANSWER: True
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