What is a memo data type?
A Memo field can be useful for storing large amounts alphanumeric information. Some typical uses for this data type would be a note, comments, description, or address field, The Memo data type allows up to 65,536 alphanumeric characters with options to set several properties such as rich text formatting.
Attachments also store data more efficiently. Earlier versions of Access used a technology called Object Linking and Embedding (OLE) to store images and documents. By default, OLE created a bitmap equivalent of the image or document.
- You can store images in MySQL as blobs. However, this is problematic for a couple of reasons: This means that your DB images are converted to blobs, inserted into a database, and then stored on disk; you can save a lot of overhead by simply storing them on disk.
- Add a field in the middle of a table
- Open the table in Datasheet view.
- Select the field in front of the position where you want to add a new field.
- On the Fields tab, in the Add & Delete group, click the field type that you want.
- Create a single item form
- In the Navigation Pane, click the table or query that contains the data that you want to see on the form.
- On the Create tab, in the Forms group, click Form. Access creates the form and displays it in Layout view.
- To begin working with the form, switch to Form view:
Microsoft Access Data Types
|Memo||Memo is used for larger amounts of text. Stores up to 65,536 characters. Note: You cannot sort a memo field. However, they are searchable|
|Byte||Allows whole numbers from 0 to 255||1 byte|
|Integer||Allows whole numbers between -32,768 and 32,767||2 bytes|
- Data types are especially important in Java because it is a strongly typed language. This means that all operations are type-checked by the compiler for type compatibility. Illegal operations will not be compiled. Thus, strong type checking helps prevent errors and enhances reliability.
- The three parts of an input mask. Input masks are made up one mandatory part and two optional parts, and each part is separated by a semicolon.
- AutoNumber is a type of data used in Microsoft Access tables to generate an automatically incremented numeric counter. It may be used to create an identity column which uniquely identifies each record of a table. Only one AutoNumber is allowed in each table. The data type was called Counter in Access 2.0.
Updated: 18th September 2018