Oracle 12c: SQL
3rd Edition
ISBN: 9781305251038
Author: Joan Casteel
Publisher: Cengage Learning
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Textbook Question
Chapter 1, Problem 14MC
A unique identifier for a data row that consists of more than one field is commonly called a:
- a. primary plus key
- b. composite primary key
- c. foreign key
- d. none of the above
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Relation:
Relation is a two-dimensional table in which data is named. The
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Although relation is defined as the two-dimensional table of
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There are some properties that differentiate relation tables
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SQL Database help
Assume that the Authors table is already built in the database with the following specifications:
Authors:
Column Name
Data Type
constrains
Authors ID
Author Name
Varchar2(10)
|Varchar2(30)
Primary key
Unique
You Need to Create the Books table with the following specifications
Column Name
Data Type
Constrains
ISBN
Book Title
Book Price
Author id
Number (10)
Varchar2(40)
Number (4,2)
Varchar2(10)
Primary key
Not Null
referencing the Author_ID in
the Author Table
Complete the create statement by drag and drop the correct word:
Create Table lblank (ISBN Number (10) plank,
Book Title Varchar2blank ) Not Null,
Book Price Number(4, 2),
Auther IR blank (10) references Jolank (blank );
Author ID Books Number||Authors Not Nul Varchar2| Primary Key 40
h (United States)
Chapter 1 Solutions
Oracle 12c: SQL
Ch. 1 - Prob. 1RQCh. 1 - Prob. 2RQCh. 1 - Prob. 3RQCh. 1 - Prob. 4RQCh. 1 - Discuss the problems that can be caused by data...Ch. 1 - Explain the role of a primary key.Ch. 1 - Prob. 7RQCh. 1 - Prob. 8RQCh. 1 - What type of relationship can’t be stored in a...Ch. 1 - Identify at least three reasons an organization...
Ch. 1 - Prob. 1MCCh. 1 - Prob. 2MCCh. 1 - Prob. 3MCCh. 1 - Prob. 4MCCh. 1 - Prob. 5MCCh. 1 - Prob. 6MCCh. 1 - Prob. 7MCCh. 1 - Which of the following has no partial or...Ch. 1 - Prob. 9MCCh. 1 - Which of the following has no partial dependencies...Ch. 1 - Which of the following has no repeating groups but...Ch. 1 - Prob. 12MCCh. 1 - Prob. 13MCCh. 1 - A unique identifier for a data row that consists...Ch. 1 - Which of the following symbols represents an...Ch. 1 - Prob. 16MCCh. 1 - Which of the following represents a field in a...Ch. 1 - Which of the following defines a relationship in...Ch. 1 - When part of the data in a table depends on a...Ch. 1 - Which of the following is used to join data...Ch. 1 - Which tables and fields would you access to...Ch. 1 - Prob. 2HOACh. 1 - Prob. 3HOACh. 1 - Prob. 4HOACh. 1 - Access path A database table is composed of...Ch. 1 - Prob. 6HOACh. 1 - Prob. 7HOACh. 1 - Prob. 8HOACh. 1 - Prob. 9HOACh. 1 - Prob. 10HOA
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- Delete the index named ITEM_INDEX3.arrow_forwardA(n) _____ is a request for specific information from a database.arrow_forward1-Write the syntax to insert into a relational table called students the address column references an object table called addresses that was created using an address_type. Other columns exist in the students table, but you are only inserting into the ones below. Aliases used should be the first letter of the table name, eg students would be s, addresses would be a Relational Table Name students attribute student_id attribute surname attribute addressarrow_forward
- Given the tables: reading StationNo rainfall mintemp maxtemp 100 10 18 27 101 15 20 29 102 12 19 28 Stationregion station stationname 100 Savanne 101 Pamplemousses 102 Rose Belle (i) Write the statement to create the two table structures with the primary key as the field underlined. You may decide on the size of the fields. (ii) Write the statement to enter the data. (ii) Write the statement to display all the records with the fields station. stationname, mintemp, maxtemp .arrow_forwardSQLarrow_forwardJ SHORTAND NOTATION FOR RELATIONAL SQL TABLES Notation Example Meaning Underlined A or A, B The attribute(s) is (are) a primary key Superscript name of relation AR or AR, BR The attribute(s) is (are) a foreign key referencing relation R As an example, the schema R(A, B, C, D, ES) S(F, G, H) corresponds to the following SQL tables: CREATE TABLE R ( A <any SQL type>, B <any SQL type>, C <any SQL type>, D <any SQL type>, E <any SQL type>, PRIMARY KEY(A), FOREIGN KEY (E) REFERENCES S(F) ); CREATE TABLE S ( F <any SQL type>, G <any SQL type>, H <any SQL type>, PRIMARY KEY(F)) EXERCISE Consider the following relational schema, representing five relations describing shopping transactions and information about credit cards generating them [the used notation is explained above]. SHOPPINGTRANSACTION (TransId, Date, Amount, Currency, ExchangeRate, CardNbrCREDITCARD, StoreIdSTORE) CREDITCARD (CardNbr, CardTypeCARDTYPE, CardOwnerOWNER, ExpDate, Limit)…arrow_forward
- Write 10 SELECT statements for the database you have implemented.i. 3 of them should use minimum 2 tables.ii. 4 of them should use minimum 3 tables.iii. 3 of them should use minimum 4 tables.arrow_forwardSelect statement urgentarrow_forwardAlternate keys: Identify at least five keys (not already listed as PK or FK) needed by end users. These indexes would be considered Alternate or Secondary keys and are mostly used for queries and quick reporting. They may contain multiple columns.arrow_forward
- assume that a database has a table named Stock, with thefollowing columns:Column Name TypeTrading_Symbol nchar(10)Company_Name nchar(25)Num_Shares intPurchase_Price moneySelling_Price money Write a Select statement that returns the Trading_Symbol column only from the rows where Selling_Price is greater than Purchase_Price and Num_Shares is greater than 100.arrow_forwardA unique identifier for a data row that consists of more than one field is commonly called a:a. primary plus keyb. composite primary keyc. foreign keyd. none of the abovearrow_forwardCode SQLarrow_forward
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