Create a new table named PRODUCT. The product table will have two attributes;  product ID as integer, not null, and a primary key constraint set to unique. product description as varchar(30), not null specification.

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
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Create a new table named PRODUCT. The product table will have two attributes; 

  • product ID as integer, not null, and a primary key constraint set to unique.
  • product description as varchar(30), not null specification. 

 

I am not sure how to do a primary key contraint set to unique.  I believe I did the first two correct.  

### Database Table Structure for "Table_1"

This table represents the structure of a database table named **Table_1** within the database **dbo** under the catalog **cis305**. Below is a detailed breakdown of the table's columns, their data types, and nullability:

#### Column Details:

1. **Product_ID**
   - **Data Type:** `int`
   - **Allow Nulls:** Yes
   - **Description:** This column serves as the identifier for each product within the table. It is an integer type allowing null values, which means it can have a null value for some rows.

2. **Product_Desc**
   - **Data Type:** `varchar(32)`
   - **Allow Nulls:** Yes
   - **Description:** This column is used to store the description of the product. It is a variable character type with a maximum length of 32 characters, allowing null values.

3. **Constraint: [PK_product_id]**
   - **Data Type:** `nchar(10)`
   - **Allow Nulls:** No
   - **Description:** This represents a primary key constraint named `PK_product_id` for the table. It's a fixed-length non-Unicode character type that can store up to 10 characters and does not allow null values.

### Explanation of the Components:

- **`Column Name`:** Specifies the names of the columns in the table.
- **`Data Type`:** Indicates the type of data that can be stored in each column.
- **`Allow Nulls`:** Shows whether the column allows null values. A checkbox indicates that null values are allowed; unchecked means it does not allow null values.

### Diagram Representation:

- **Table name:** `Table_1`
- **Database:** `dbo` under `cis305`
- **Columns:**
  - `Product_ID` (int, allows null)
  - `Product_Desc` (varchar(32), allows null)
  - `[Constraint PK_product_id]` (nchar(10), does not allow null)

This table structure is essential for database design and helps ensure data integrity and proper organization within the database system.
Transcribed Image Text:### Database Table Structure for "Table_1" This table represents the structure of a database table named **Table_1** within the database **dbo** under the catalog **cis305**. Below is a detailed breakdown of the table's columns, their data types, and nullability: #### Column Details: 1. **Product_ID** - **Data Type:** `int` - **Allow Nulls:** Yes - **Description:** This column serves as the identifier for each product within the table. It is an integer type allowing null values, which means it can have a null value for some rows. 2. **Product_Desc** - **Data Type:** `varchar(32)` - **Allow Nulls:** Yes - **Description:** This column is used to store the description of the product. It is a variable character type with a maximum length of 32 characters, allowing null values. 3. **Constraint: [PK_product_id]** - **Data Type:** `nchar(10)` - **Allow Nulls:** No - **Description:** This represents a primary key constraint named `PK_product_id` for the table. It's a fixed-length non-Unicode character type that can store up to 10 characters and does not allow null values. ### Explanation of the Components: - **`Column Name`:** Specifies the names of the columns in the table. - **`Data Type`:** Indicates the type of data that can be stored in each column. - **`Allow Nulls`:** Shows whether the column allows null values. A checkbox indicates that null values are allowed; unchecked means it does not allow null values. ### Diagram Representation: - **Table name:** `Table_1` - **Database:** `dbo` under `cis305` - **Columns:** - `Product_ID` (int, allows null) - `Product_Desc` (varchar(32), allows null) - `[Constraint PK_product_id]` (nchar(10), does not allow null) This table structure is essential for database design and helps ensure data integrity and proper organization within the database system.
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