You can have multiple tables for different types of data, but shouldn't have tables for each user. No, mysql does not have a limit to number of tables in a database, although obviously you'll be constrained by how much disk space you have available.
So if you suspect you will have more than one million tables, you should consider redesigning the database ; Also note, that this blogpost is from Generally the limit, if there is one, should be large enough not to worry about. If you find yourself worrying about it, you have larger problems. For instance if you were dealing with customers who have orders, you would create a table for customers and a table for orders. You should not be creating a table for each customer.
Yep, there is a limit.. I can see a reason some might want a table per user. It would improve performance when wanting to compare and sort data for one particular user. I have used this method, all be it with less than one hundred users though. Not sure of any consequences that may be faced with thousands of users.
Why put users in their own tables? Seems like a waste of time to me. One users table with an identifying ID that increases every time a new row is added would work fine. Stack Overflow for Teams — Collaborate and share knowledge with a private group.
Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Ask Question. Asked 10 years, 7 months ago. In Access, rows and columns are referred to as records and fields. A field is a way of organizing information by type. Think of the field name as a question and every cell within that field as a response to that question. In our example, the Last Name field is selected, which contains all the last names in the table.
A record is one unit of information. Every cell on a given row is part of that row's record. In our example, Quinton Boyd's record is selected, which contains all of the information related to him in the table. Each record has its own ID number. Within a table, each ID number is unique to its record and refers to all of the information within that record.
The ID number for a record cannot be changed. Each cell of data in your table is part of both a field and a record. For instance, if you had a table of names and contact information, each person would be represented by a record, and each piece of information about each person—name, phone number, address, and so on—would be contained within a distinct field on that record's row.
The Records command group on the Home tab contains a handful of commands for working with records, including New Record , Save Record , and Delete Record.
The Find command allows you to search for any term in your table. The Replace command allows you to search for any term in your table and replace it with a new one. For example, you could replace the word Fall with the word Autumn. These formatting options allow you to make your table easier to read by adding an alternate row color or modifying the gridlines that separate individual rows and columns.
You can access even more formatting options by clicking the arrow in the bottom-right corner. In Access, columns are referred to as fields. When you organize your data by entering it into different fields, you are organizing it by type. Each field contains one type of data. The type of data contained within a field is described by the title at the top of each field.
In Access, table rows are referred to as records. A record is a unit of data that includes every piece of information in a given row. The Record Navigation bar allows you to navigate through records one at a time. Click the arrows to move from record to record, and navigate directly to a record by searching for it with the record search box.
The most important objects in a database are tables because they store the data. Planning how the data will be stored and structured in tables is critical. When planning your database, think about what you have to put in rather than focusing on the output, like reports. The data structure—how your tables and relationships are set up—is like the foundation of a building. It needs to be organized well and constructed solidly so that what gets built on top is stable and flexible.
Any database construction should begin with structuring data, but be prepared to make changes as you develop the database. As you get a better understanding of the shape and form the database is taking, you want to translate that increased knowledge into improving the data structure.
Tables are composed of fields. Each field has a name, a data type, size, and other properties. Deciding how to organize fields into each table is driven by how things relate in the real world. These main ideas will become tables. And each of these nouns will be described with adjectives, or fields.
Each respective table then includes fields that describe these nouns. The ProdSales table stores information about each sale. The product sold is stored in a field called ProductID. The first record shows that the ProductID is The ProdCat table shows that 4 represents the Brass product category.
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