What is a tagging schema?

Schema.org (often called Schema) is a semantic vocabulary of tags (or microdata) that you can add to your HTML to improve the way search engines read and represent your page in SERPs.

What is a tag database?

In information systems, a tag is a keyword or term assigned to a piece of information (such as an Internet bookmark, digital image, database record, or computer file). This kind of metadata helps describe an item and allows it to be found again by browsing or searching.

What is meant by database schema?

A database schema represents the logical configuration of all or part of a relational database. It can exist both as a visual representation and as a set of formulas known as integrity constraints that govern a database. These formulas are expressed in a data definition language, such as SQL.

What are tags in SQL?

The JSTL SQL tags are designed for quick prototyping and simple applications. For production applications, database operations are normally encapsulated in JavaBeans components. The query tag is used to perform an SQL query that returns a result set.

How is a schema represented in a database?

A schema contains schema objects, which could be tables , columns, data types, views, stored procedures, relationships, primary keys, foreign keys, etc. A database schema can be represented in a visual diagram, which shows the database objects and their relationship with each other. A basic schema diagram representing a small three-table database.

Which is the correct spelling Schema or schemata?

In database terms, a schema (pronounced “skee-muh” or “skee-mah”) is the organisation and structure of a database. Both schemas and schemata can be used as plural forms.

Is the schema diagram the same as the Entity Relationship Diagram?

Thus, the terms schema diagram and entity-relationship diagram are often interchangeable. In the Oracle database system, the term database schema, which is also known as “SQL schema,” has a different meaning. Here, a database can have multiple schemas (or “schemata,” if you’re feeling fancy).

Which is the best description of an XML Schema?

XML schema (XSD) Overview. An XML schema, commonly known as an XML Schema Definition (XSD), formally describes what a given XML document can contain, in the same way that a database schema describes the data that can be contained in a database (i.e. table structure, data types, constraints etc.).