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- Question
A DBMS query language is designed to
Options- A. Specify the structure of a database
- B. Support in the development of complex applications software
- C. Support end users who use English-like commands
- D. All of the above
- Correct Answer
- All of the above
- 1. Which of the following statements is true concerning subqueries?
Options- A. Does not start with the word SELECT.
- B. Involves the use of an inner and outer query.
- C. Cannot return the same result as a query that is not a subquery.
- D. All of the above Discuss
- 2. Which one of the following sorts rows in SQL?
Options- A. ORDER BY
- B. GROUP BY
- C. SORT BY
- D. ALIGN BY Discuss
- 3. What operator tests column for the absence of data?
Options- A. NOT operator
- B. IS NULL operator
- C. EXISTS operator
- D. All of the above Discuss
- 4. The multi part identifier could not be bound is Discuss
- 5. What UNION does in SQL? Discuss
- 6. Which of the following is a comparison operator in SQL?
Options- A. =
- B. <>
- C. `
- D. / Discuss
- 7. AND, OR and NOT are examples of
Options- A. Clauses
- B. Boolean operators
- C. Conjuctive operators
- D. Exclusive operators Discuss
- 8. Oracle SQL developer is an Discuss
- 9. Which of the following is not a relational database?
Options- A. 4th Dimension
- B. Reflex
- C. dBASE IV
- D. FoxPro Discuss
- 10. A subquery in an SQL SELECT statement is enclosed in
Options- A. [ ]
- B. { }
- C. < >
- D. ( ) Discuss
Technology problems
Search Results
Correct Answer: Involves the use of an inner and outer query.
Correct Answer: ORDER BY
Correct Answer: IS NULL operator
Explanation:
SELECT "column_name"
FROM "table_name"
WHERE "column_name" IS NULL.
Correct Answer: One of the most common errors that you might face in join statements is Server: Msg 4104, Level 16, State 1, Line 1 The multi-part identifier could not be bound A multipart identifier is any description of a field or table that contains multiple parts - for instance MyTableSomeRow - if it can't be bound that means there's something wrong with it - either you've got a simple typo, or a confusion between table and column It can also be caused by using reserved words in your table or field names and not surrounding them with [] The main reason for this error is that the source table cannot be found, for example if you have statement such as Table1OrderDate, and then if you get error above, this means that Table1 cannot be found in the query Sometimes you can see that source table exists in the query, but T-SQL cannot understand it, especially when you write join statements
Correct Answer: In SQL, UNION merges the contents of two structurally-compatible tables into a single combined table
Correct Answer: =
Explanation:
The comparison operator that is used in SQL is '='. Comparison operators test whether two expressions are the same. Comparison operators can be used on all expressions except expressions of the text, ntext, or image data types.
Correct Answer: Boolean operators
Correct Answer: Oracle SQL developer is an Oracle Database IDE
Correct Answer: Reflex
Correct Answer: ( )
Explanation:
A subquery in an SQL SELECT statement is enclosed in parenthesis (...).
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