2. 3. Page 2 of 5 A Haskell variable. A Haskell variable is a sequence of one or more characters which can be either uppercase letter (A-Z), lowercase letters (a-z), digits (8-9), the underscore (_) character, or the apostrophe (¹) characters. However, the first character must be either a lowercase letters or an underscore character, it cannot be a digit or the apostrophe. For example, both "abc1", "_xyz'" are valid Haskell variables.4 A US state and zip code in postal addresses. When writing a postal address, the state is usually written as a 2-uppercase-letter abbreviation. There can be an optional space character between the state and the zip code. The zip code is either a simple zip code or a zip+4 code. The simple zip code is simply a group of 5 decimal digits (which can start with the digit 0). The zip+4 code is the simple zip code followed by a hyphen (-) character and then another group of 4 digits. For example, the state and zip code for FSU can be written as either "NC28301", "NC 28301", "NC28301-4252", or "NC 28301- 4252".

2. 3. Page 2 of 5 A Haskell variable. A Haskell variable is a sequence of one or more characters which can be either uppercase letter (A-Z), lowercase letters (a-z), digits (8-9), the underscore (_) character, or the apostrophe (¹) characters. However, the first character must be either a lowercase letters or an underscore character, it cannot be a digit or the apostrophe. For example, both "abc1", "_xyz'" are valid Haskell variables.4 A US state and zip code in postal addresses. When writing a postal address, the state is usually written as a 2-uppercase-letter abbreviation. There can be an optional space character between the state and the zip code. The zip code is either a simple zip code or a zip+4 code. The simple zip code is simply a group of 5 decimal digits (which can start with the digit 0). The zip+4 code is the simple zip code followed by a hyphen (-) character and then another group of 4 digits. For example, the state and zip code for FSU can be written as either "NC28301", "NC 28301", "NC28301-4252", or "NC 28301- 4252".

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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