Of the following queries, which one returns more tuples than the others?

How many tuples are in the result of the SQL query: SELECT DISTINCT Email FROM Jobs NATURAL LEFT OUTER JOIN Employer;

How many attributes (columns) appear in the relation produced by the query:  

How many tuples are in the result of the following SQL query: SELECT * FROM User X NATURAL JOIN User Y;

Which relation(s) will result from mapping the entity type PERSON?

Develop a program in Java to prompt the user for a score and then assign a letter grade based on the following grading criteria. The score must be between 0 and 100, if the inputted score is outside the range, display an error message. Use JOptionPane for Input and Output Grading Criteria Score >= 90 – “A” Score >= 80 – “B” Score >= 70 – “C” Score < 70   - “F”

Please type your response to the writing prompt above into the text box. You can write as much as you want, but aim for a minimum of one-paragraph with 8-10 sentences.

Identify the author: This author published over four hundred works. Some of his most engaging writings deal with the witchcraft trials at Salem, which illustrate central tensions between the Puritan worldview and an emerging, science-based modern order. He was only indirectly involved in the witch trial prosecutions. He was recognized as having an interest in scientific investigation of the natural world. He took a public stand in favor of inoculation during Boston’s smallpox epidemic in 1721-22, causing many to condemn him. He approached the study of witchcraft in much the same way he approached other physical, mental, and spiritual phenomena.

Identify the title of the quote:   “The sun never shined on a cause of greater worth. ‘Tis not the affair of a city, a county, a province, or a kingdom; but of a continent-at least one-eighth part of the habitable globe. ‘Tis not the concern of a day, a year, or an age; posterity are virtually involved in the contest, and will be more or less affected even to the end of time by the proceedings now. Now is the seedtime of continental union, faith, and honor.”

    Identify the year:   After being taken off course by a storm in this year, the Pilgrim immigrants landed in the Cape Cod area they called Plymouth, having traveled for two months across the Atlantic Ocean on the Mayflower.