IS 410 FINAL STUDY GUIDE QUESTIONS WELL ANSWERED LATEST UPDATE 2026

IS 410 FINAL STUDY GUIDE QUESTIONS WELL ANSWERED LATEST UPDATE 2026 Identify the capabilities of SELECT statement. A. Projection B. Selection C. Data Control D. Transaction - Answers A & B. The SELECT statement can be used for selection, projection and joining. 2. Determine the capability of the SELECT statement demonstrated in the given query. SELECT , FROM emp e, dept d WHERE o = o AND 1000; A. Selection B. Filtering C. Joining D. Projection - Answers A, C, D. Projection is including only the required columns in query, while Selection is selecting only the required data. Joining means combining two tables together through a connecting column. Which of the following clause is used to suppress duplicates in a SELECT statement? A. INTERSECT B. DUPLICATE C. DISTINCT D. UNIQUE - Answers C, D. Duplicate data can be restricted with the use of DISTINCT or UNIQUE in the SELECT statement. Determine the output of the below query - SELECT '5+7' FROM dual; A. 12 B. 5+7 C. 5 D. 7 - Answers B, Oracle treats the values within double quotes as string expressions. Chose the statements which correctly define a NULL value. A. NULL is a special value with zero bytes B. NULL is no value or unknown value C. NULL is represented by a blank space D. NULL is not same as zero - Answers B & D. NULL is NO VALUE but neither same as zero nor as blank or space character. What is true about data types in Oracle DB? A. They are given to columns for sorting purposes. B. They are given to columns for a structured representation in a table. C. They are given to columns to constrain the nature of the data it can store. D. They are not mandatory. - Answers C. Data types define the nature of data which a column can store in a table. A column can store only one type of data. The primary data types available in Oracle are NUMBER, VARCHAR2, and DATE. Which of the following data types are appropriate for general functions? A. VARCHAR2 B. NUMBER C. DATE D. All Datatypes - Answers D. General functions are usually compatible with all primary data types like NUMBER, VARCHAR2 and DATE. Assuming the SYSDATE is 01-JAN-13, what will be the outcome of the following query? SELECT TO_CHAR (SYSDATE, 'DDTH') FROM dual; A. 1st of January B. 1st C. 1 ST D. 01ST - Answers D. 01ST Assuming the SYSDATE is 01-JAN-13 and falls on Tuesday, what will be the outcome of the following query? SELECT TO_CHAR (SYSDATE, 'fmDay')||'''s Meeting' FROM dual; A. Tuesday B. TUESDAY C. TUESDAY's Meeting D. Tuesday's Meeting - Answers D. Tuesday's Meeting What will be the outcome of the following query? SELECT TO_DATE('01 / JAN / 13','DD-MON-YY') FROM dual; A. ORA error B. 01-JAN-2013 C. 01-JANUARY-13 D. 01-JAN-13 - Answers D. 01-JAN-13 What will be the outcome of the following query? SELECT TO_DATE('01 ## JAN / 13','DD-MON-YY') FROM dual; A. ORA error B. 01-JAN-2013 C. 01-JANUARY-13 D. 01-JAN-13 - Answers A. Use a single delimiter between the dates. Which of the following is an example of a nested function? A. SELECT lower(last_name) FROM employees; B. SELECT upper (last_name) FROM employees; C. SELECT concat (first_name, last_name) FROM employees; D. SELECT upper (concat(SUBSTR(first_name,1,6),'_UK')) FROM employees; - Answers D. More than one functions in a function is known as nesting of functions. Which of the following is not related to a Relational Database? A. Selection B. Projection C. Joining D. None of the above - Answers D. The options A, B and C are the major capabilities of the Oracle Relational Database. Which of the following methods is used for writing a query with columns from multiple tables? A. SELECT B. GROUP BY C. ORDER BY D. JOINS - Answers D. Joins are used to connect multiple tables and project column data from multiple tables in Oracle What is true about the source table and the target table in terms of Oracle Joins? A. They must have atleast one column of same name B. All the columns should be of the same name and same data type for joining the two tables C. The source and the target tables cannot be swapped and are position specific D. None of the above - Answers D. The source and the target tables can be swapped and are not fixed at their positions.Depending of the type of join used in the query, the result may differ or remain same. What is true about the JOIN..ON clause in Oracle DB? A. It does not depend on the columns in the source and target tables having identical names B. Only those columns from the source and the target tables which have identical names can be used with this clause C. It is a format of the NATURAL JOIN D. All of the above - Answers : A, C. The join condition for the natural join is basically an equijoin of all columns with the same name. Use the ON clause to specify arbitrary conditions or specify columns to join. The join condition is separated from other search conditions. The ON clause makes code easy to understand. What of the following can be used to fetch non-matching rows along with the matching rows between a source and a target table in Oracle DB? A. EQUI-JOIN B. SELF-JOIN C. NATURAL JOIN D. OUTER-JOIN - Answers D. An outer join is created when records need to be included in the results without having corresponding records in the join tables. These records are matched with NULL records so that they're included in the output. What is an INNER JOIN in Oracle DB? A. The join giving the matching records between two tables is called an INNER JOIN B. An inner join can use operators like ,, C. Both A and B D. None of the above - Answers C. A join can be an inner join, in which the only records returned have a matching record in all tables, or an outer join, in which records can be returned regardless of whether there's a matching record in the join. What is the difference between a INNER JOIN and an EQUI-JOIN in Oracle DB? A. They are the same in terms of syntax and result sets obtained. B. An INNER JOIN is a subset of an EQUI-JOIN C. An INNER JOIN can use operators like ,, along with "=" while EQUI-JOIN only uses the "=" operator D. All of the above - Answers C. EQUI-JOIN is a type of INNER JOIN containing "=" operator in a join condition, whereas the INNER JOIN can contain both equality as well non-equality operators What is true when multiple joins are used in an SQL statement? A. The joins are evaluated from left to right B. The joins are evaluated from right to left C. There is no precedence in the process of the evaluation of joins D. None of the above - Answers A. When multiple-joins exist in a statement, they are evaluated from left to right. What is true regarding a Self-Join in Oracle DB? A. Only two tables are required for the join to work B. The columns in the result set are obtained from two tables but are displayed in one table C. Conceptually, the source table duplicates itself to create the target table. (Oracle doesn't duplicate tables) D. All of the above - Answers C. Self-joins are used when a table must be joined to itself to retrieve the data you need. Table aliases are required in the FROM clause to perform a self-join. What is true regarding FULL OUTER JOIN in Oracle DB? A. When both LEFT OUTER JOIN and RIGHT OUTER JOIN appear in the same query,it is called a FULL OUTER JOIN B. A FULL OUTER JOIN is the same as an OUTER JOIN C. Both A and B D. A join between two tables that returns the results of an INNER join and a LEFT and RIGHT OUTER JOIN is called a FULL OUTER JOIN - Answers D. A full outer join includes all records from both tables, even if no corresponding record in the other table is found Which of the following ANSI SQL: 1999 join syntax joins are supported by Oracle? A. Cartesian products B. Natural joins C. Full OUTER join D. Equijoins - Answers D. Equijoins Which of the following is not a format for Outer Joins in Oracle DB? A. Right B. Left C. Centre D. Full - Answers C. Except 'Centre', rest 3 types are the types of formats of the Outer Joins in Oracle DB. With the JOIN method for outer joins, you can add the LEFT, RIGHT, or FULL keywords. You need to find the results obtained by the above query only for the departments 100 and 101. Which of the following clauses should be added / modified to the above query? A. ON (tment_id = tment_id ) should be added B. USING (tment_id ) should be added C. WHERE tment_id in (100,101) should be added D. None of the above - Answers C. The NATURAL JOIN clause implicitly matches all the identical named columns. To add additional conditions the WHERE clause can be used. You need to find the results obtained by the above query for all those employees who have salaries greater than 20000. Which of the following clauses should be added / modified to the above query? A. ON (tment_id = tment_id ) WHERE salary 20000; B. USING (tment_id ) WHERE salary 20000; C. USING (department_id ) WHERE salary20000; D. WHERE salary 20000; - Answers D. WHERE salary 20000; .If the NATURAL JOIN in the above query is replaced by only JOIN which of the following should be added / modified to the above query to give the results pertaining to Department 100? A. ON (department_id = 100); B. USING (tment_id =100); C. WHERE tment_id = 100; D. ON (tment_id = tment_id and tment_id = 100); - Answers D. The equi-joins can be added for more conditions after the ON clause. .In which two cases an OUTER JOIN should be used? A. If the joined tables' columns have NULL values B. If the joined tables have NOT NULL columns C. If the joined tables have only un-matched data D. If the joined tables have both matching as well as non-matching data - Answers A, D. An outer join is created when records need to be included in the results without having corresponding records in the join tables. These records are matched with NULL records so that they're included in the output. . Which of the following queries is valid? A. SELECT , l, ity FROM books b NATURAL JOIN orders od NATURAL JOIN orderitems o WHERE # = 1005; B. SELECT , l, ity FROM books b, orders od, orderitems o WHERE # = # AND = AND #=1005; C. SELECT , l, ity FROM books b, orderitems o WHERE = AND #=1005; D. None of the above - Answers C. If tables in the joins have alias, the selected columns must be referred with the alias and not with the actual table names. What does ACID mean with respect to relational database? A. Accuracy, Consistency, Isolation, Database B. Accuracy, Concurrency, Isolation, Durability C. Atomicity, Consistency, Isolation, Durability