Question 11 Which one is NOT correct? LOTSIA Property id County_name Lot Area FD1 FD2 FD5 LOSTS1A is BCNF OLOSTS1A is 2NF OLOSTS1A is 3NF OLOSTS1A is 1NF Question 12 First Normal form is focusing on each attribute. Which one is NOT allowed in the first normal form? Multi-valued attribute Single attribute Atomic attribute Non-nested attribute

Question 11 Which one is NOT correct? LOTSIA Property id County_name Lot Area FD1 FD2 FD5 LOSTS1A is BCNF OLOSTS1A is 2NF OLOSTS1A is 3NF OLOSTS1A is 1NF Question 12 First Normal form is focusing on each attribute. Which one is NOT allowed in the first normal form? Multi-valued attribute Single attribute Atomic attribute Non-nested attribute

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question 6 Inventory Database: Customers(custid, custName, address, phone, creditLimit) Orders (orderNo, order Date, totalAmount, custID) products (prodNo, prodName, unitPrice) Includes(onderNo, prodNo, orderedQantity). The primary keys are underlined. The referential integrity constraints are as follows: • the column custID of relation Orders that references table Customers, • the columns orderNo of relation Includes that references table orders, and • the column prodNo of relation Includes that references table Products. For the Inventory Database in the reference, write the SQL command to find the product numbers of all products ordered by John Smith on March 1, 2022. For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). BIUS Paragraph Arial Q ΠΩ TI 10pt 田田日 A V 图用图 ↔ T @ I 26 X + 10 □ bh 三三三 E
What do you meant by simple and composite attribute?
Explain why an index is only helpful if the values of an attribute have a suitable range of values.
When an attribute is included in a composite primary key, it automatically becomes a candidate key for that table.
A composite primary key's prospective key is an attribute?
Implement a new independent entity phone in the Sakila database. Attributes and relationships are shown in the following diagram: The diagram uses Sakila naming conventions. Follow the Sakila conventions for your table and column names: All lower case Underscore separator between root and suffix Foreign keys have the same name as referenced primary key Write CREATE TABLE and ALTER TABLE statements that: Implement the entity as a new phone table. Implement the has relationships as foreign keys in the Sakila customer, staff, and store tables. Remove the existing phone column from the Sakila address table. Step 2 requires adding a foreign key constraint to an existing table. Ex: ALTER TABLE customer ADD FOREIGN KEY (phone_id) REFERENCES phone(phone_id) ON DELETE SET NULL ON UPDATE CASCADE; Specify data types as follows: phone_id, phone_number, and country_code have data type INT. phone_type has date type VARCHAR(12) and contains strings like 'Home', 'Mobile', and 'Other'. Apply…
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The primary aspect of a composite attribute is that it Select one: a. Is an attribute that has a set of values b. Is an attribute that can be determined from other attribute values c. Consists of subparts, which represent more basic attributes d. None of the above
database Assume that you have the following relation; R(a,b,c) a b c ---------- 1 A F 2 B M 3 T F 4 R M 5 A F And S is a relation with one attribute called c and has one tuple with the value 'F". Then the cardinality of R divided by S will be = ----- Select one: a. Non of the mentioned b. 2 c. 1 d. 3
The value range of an attribute must be large enough for the index to be relevant. Except for this one use case, an index is never helpful.
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