Which one of the following join is used to combine the table itself? O a Cross Join Ob. Inner Join Oc Self Join Od. Outer Join
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A: Cartesian Join: The CARTESIAN JOIN is also known as CROSS JOIN. The CARTESIAN JOIN selects the…
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A: Outer Join is used to select the record from the tables when there is a match present in either of…
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A: The To_CHAR function is utilized to transform the given dates and numbers to the formatted character…
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A: Valid command When a column is unused, then the storage space will not be released. When a column…
Q: Which SQL statement defines the FOREIGN KEY constraint on the DEPTNO column of the EMP table?
A: To which SQL statement defines the FOREIGN KEY constraint on the DEPTNO column of the EMP table.
Q: 10- What the output of the following query? SELECT name From STORE where job='mgr'
A: Consider the query SELECT name From STORE where job = ‘mgr’ The query will select all rows of the…
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A: Select statement The select statement is used to select data from a database. The data returned is…
Q: plz help with the following: Change the following commands to oracle commands line meaning that…
A: Below are the commands for Oracle. I executed them successfully CREATE TABLE book(Num NUMBER NOT…
Q: How many NOT NULL constraints can be created at the table level by using the CREATE TABLE command? (…
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Q: The following SQL statement contains which type of join? SELECT title, order#, quantityFROM books…
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Q: In which joins, joining records from the right side table with no matching values in the left side…
A: refer to step 2 for the answer.
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A: Given is a query select * from student natural full outer join and we need to tell the condition for…
Q: Which of the following lists all books published by the publisher named Printing Is Us? (refer to…
A: NATURAL JOIN A NATURAL JOIN is a kind of JOIN used along with SELECT statements in most of the…
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A: Outer join in SQL is used to return the joined tuples from the two tables which satisfies the…
Q: Q2/ what is the difference between the SQL commands (alter table) and (drop table)
A:
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A: In questions with many questions we must answer 1. Since we do not have data to compare with we are…
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A: In SQL query, natural join is a type of equi joins constructed so that columns from related tables…
Q: Which line of the SELECT statement is used to restrict the number of records the query processes?…
A: To Find: Line of the SELECT statement is used to restrict the number of records the query…
Q: Given the following query:SELECT title, giftFROM books CROSS JOIN promotion;Which of the following…
A: Answer of the above question:
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A: TRUNCATE TABLE statement is used to remove all rows from existing table. It is used to delete…
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A: The INNER JOIN is also referred as EQUIJOIN.The EQUIJOIN creates a new result table by combining…
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A: Please find the answer below :
Q: Which of the following queries contains an equality join? (refer to the tables in the JustLee Books…
A: Equality Join: Equality Join also known as “Equi Join” that implements a JOIN operation against…
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A: Answer ;-- option c Select cus_id,customer.name,region.name from customer LEFT JOIN region on…
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A: We need to combine the two data frames. Therefore, the key will be Flight Unique ID
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A: Deletion in database The DROP statement allows the user to drop (or delete) the existing database…
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A: Creating the table and adding data into the table: CREATE statement creates tables in a given…
Q: Which of the following commands drops any columns marked as unused from the SECUSTOMERORDERS…
A: UNUSED columns: When a column is set as unused, the storage space isn't released until later. A…
Q: join the tables in the Where clause?
A: Need to specify a join condition to join the tables in the Where clause
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A: To solve this question, let us first understand each of the given options. Option a: PRIMARY KEY…
Q: tables
A: SQL: SQL is not a programming language. It is text-based and it is also called as data…
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- Which of the following commands drops any columns marked as unused from the SECUSTOMERORDERS table? DROP COLUMN FROM secustomerorders WHERE column_status = UNUSED ALTER TABLE secustomerorders DROP UNUSED COLUMNS; ALTER TABLE secustomerorders DROP (unused); DROP UNUSED COLUMNS;Which of the following statements is correct? A table can contain a maximum of only one column marked as unused. You can delete a table by removing all columns in the table. Using the SET UNUSED clause allows you to free up storage space used by a column. None of the above statements are correct.Which of the following is a correct statement? You can restore the data deleted with the DROP COLUMN clause, but not the data deleted with the SET UNUSED clause. You can’t create empty tables—all tables must contain at least three rows of data. A table can contain a maximum of 1000 columns. The maximum length of a table name is 265 characters.
- How many NOT NULL constraints can be created at the table level by using the CREATE TABLE command? 0 1 12 30 255Which of the following commands removes all data from a table but leaves the tables structure intact? a. ALTER TABLE secustomerorders DROP UNUSED COLUMNS; b. TRUNCATE TABLE secustomerorders; c. DELETE TABLE secustomerorders; d. DROP TABLE secustomerorders;Add a constraint to make sure the Rep_ID value entered in the BOOK_STORES table is a valid value contained in the STORE_REPS table. The Rep_ID columns of both tables were initially created as different datatypes. Does this cause an error when adding the constraint? Make table modifications as needed so that you can add the required constraint.
- A new table has been requested to support tracking automated emails sent to customers. Create the table and add data as described below. Tablename: email_log Columns: emailid (numeric), emaildate (datetime), customer# (numeric) Primary key: emailid column, define as an Identity Column Add the following data rows and display resulting rows (if any errors occur, explain why the error is expected) Emaildate = current date, customer# = 1007 Emailid = specify to use the column default value, emaildate = current date, customer# = 1008 Emailid = 25, emaildate = current date, customer# = 1009Which of the following commands creates a new table containing two columns? CREATE TABLE newname (coll DATE, col2 VARCHAR2); CREATE TABLE newname AS (SELECT title, retail, cost FROM books); CREATE TABLE newname (col1, co12); CREATE TABLE newname (col1 DATE DEFAULT SYSDATE, co12 VARCHAR2 (1));Which of the following commands can be used to enable a disabled constraint? a. ALTER TABLE MODIFY b. ALTER TABLE ADD c. ALTER TABLE DISABLE d. ALTER TABLE ENABLE
- Which of the following symbols is used in a SELECT clause to display all columns from a table? / & * "Suppose you created a PRIMARY KEY constraint at the same time you created a table and later decide to name the constraint. Which of the following commands can you use to change the constraint’s name? ALTER TABLE … MODIFY ALTER TABLE … ADD ALTER TABLE … DISABLE None of the above commands can be used.Which command is used to create a table based on data already contained in an existing table?
