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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Displaying Data from Multiple Tables Using Joins | 15% | - Cross join tables - Write SELECT statements to access data from more than one table using equijoins and non-equijoins - View data that does not meet a join condition by using outer joins - Join a table to itself by using a self-join |
| Topic 2: Using Subqueries to Solve Queries | 15% | - Write single-row and multi-row subqueries - List the types of subqueries - Define subqueries - Describe the types of problems that subqueries can solve |
| Topic 3: Using Conversion Functions and Conditional Expressions | 10% | - Describe implicit and explicit data type conversion - Use the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions - Use conditional IF THEN ELSE logic in a SELECT statement - Apply the NVL, NULLIF, and COALESCE functions to data |
| Topic 4: Using Set Operators | 5% | - Describe set operators - Use a set operator to combine multiple queries into a single query - Describe the order of precedence when the set operators are used |
| Topic 5: Manipulating Data | 14% | - Control transactions - Describe each data manipulation language (DML) statement - Insert rows into a table - Delete rows from a table - Update rows in a table |
| Topic 6: Restricting and Sorting Data | 6% | - Use DEFINE and UNDEFINE commands - Limit the rows that are retrieved by a query - Sort the rows that are retrieved by a query - Use ampersand substitution to restrict and sort output at runtime |
| Topic 7: Reporting Aggregated Data Using Group Functions | 15% | - Describe the use of group functions - Include or exclude grouped rows by using the HAVING clause - Group data by using the GROUP BY clause - Identify the available group functions |
| Topic 8: Using Single-Row Functions to Customize Output | 10% | - Manipulate numbers with the ROUND, TRUNC, and MOD functions - Manipulate dates with the date functions - Manipulate strings with character function in the SELECT and WHERE clauses - Describe the differences between single-row and multiple-row functions - Perform arithmetic with date data |
| Topic 9: Retrieving Data Using the SQL SELECT Statement | 5% | - Execute a basic SELECT statement - Differentiate between SQL statements and SQL*Plus commands - List the capabilities of SQL SELECT statements |
| Topic 10: Controlling User Access | 5% | - Grant privileges on tables and on a view - Differentiate system privileges from object privileges - Distinguish between granting privileges and roles |
| Topic 11: Creating Other Schema Objects | 10% | - Create, maintain, and use sequences - Create and maintain indexes - Create synonyms for database objects - Create, modify, and retrieve data from a view |
| Topic 12: Using DDL Statements to Create and Manage Tables | 14% | - Describe the data types that are available for columns - Categorize the main database objects - Drop, rename, and truncate tables - Alter table definitions - Create a simple table - Review the table structure |
| Topic 13: Working with Oracle Database SQL | 8% | - Explain the installation of Oracle Database software - Describe the Oracle Database architecture - Create a container database - Start up and shut down a database |
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NEW QUESTION # 31
Examine the structure proposed for the TRANSACTIONStable:
Which two statements are true regarding the creation and storage of data in the above table structure?
(Choose two.)
Answer: D,E
NEW QUESTION # 32
View the Exhibit and examine the structure of ORDERS and CUSTOMERS tables.
(Choose the best answer.)
You executed this UPDATE statement:
UPDATE
( SELECT order_date, order_total, customer_id FROM orders)
Set order_date = '22-mar-2007'
WHERE customer_id IN
(SELECT customer_id FROM customers
WHERE cust_last_name = 'Roberts' AND credit_limit = 600);
Which statement is true regarding the execution?
Answer: A
NEW QUESTION # 33
You need to calculate the number of days from 1st January 2019 until today.
Dates are stored in the default format of DD-MON-RR.
Which two queries give the required output?
Answer: B,D
Explanation:
To calculate the number of days between two dates in Oracle SQL, you can simply subtract the earlier date from the later date, and Oracle will return the number of days between them.
Option A uses SYSDATE to get the current date and TO_DATE to convert the string '01-JANUARY-2019' to a date using the default date format, which matches 'DD-MON-RR'. The subtraction here will correctly give the number of days between these two dates.
Option C is similar to A but includes the ROUND function, which is used to round the number to the nearest whole number. Since the difference between two dates in Oracle SQL is a decimal value representing the number of days and fractional days, rounding will give us the whole number of days, which is what we want.
Options B, D, and E are incorrect because they either use an invalid date format (the default format is 'DD-MON-RR', not 'DD/MONTH/YYYY' or 'DD-MON-YYYY'), perform invalid operations (such as subtracting a string from a date), or misuse SYSDATE.
NEW QUESTION # 34
Examine the create table statements for the stores and sales tables.
SQL> CREATE TABLE stores(store_id NUMBER(4) CONSTRAINT store_id_pk
PRIMARY KEY, store_name VARCHAR2(12), store_address VARCHAR2(20),
start_date DATE);
SQL> CREATE TABLE sales(sales_id NUMBER(4) CONSTRAINT sales_id_pk
PRIMARY KEY, item_id NUMBER(4), quantity NUMBER(10), sales_date DATE,
store_id NUMBER(4), CONSTRAINT store_id_fk FOREIGN KEY(store_id)
REFERENCES stores(store_id));
You executed the following statement:
SQL> DELETE from stores
WHERE store_id=900;
The statement fails due to the integrity constraint error:
ORA-02292: integrity constraint (HR.STORE_ID_FK) violated
Which three options ensure that the statement will execute successfully?
Answer: A,B,D
NEW QUESTION # 35
View the exhibit and examine the descriptions of the DEPTand LOCATIONStables.
You want to update the CITYcolumn of the DEPTtable for all the rows with the corresponding value in the CITYcolumn of the LOCATIONStable for each department.
Which SQL statement would you execute to accomplish the task?
UPDATE dept d
Answer: A
NEW QUESTION # 36
......
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