Spring FrameWork problemas apontado no Markers do Eclipse , o que acontece?

[Venoms]

Boa Noite, galera , estou trabalhando em um Sistema Spring FrameWork e esta me dando esse problema , não sei se são dependencia mas se alguém tiver uma experiencia e quiser dar uma resposta eu agradeceria.
Segue a imagem: E logo abaixo está todos os Markers de Erro:

Description	Resource	Path	Location	Type
Class “br.com.ciceroednilson.model.UsuarioModel” is listed in the persistence.xml file, but is not annotated	UsuarioModel.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 12	JPA Problem
Connection “DefaultDS” is not active. No validation will be done against the data source.	Sistema			JPA Problem
Column cannot be resolved to a type	UsuarioModel.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 16	Java Problem
Column cannot be resolved to a type	UsuarioModel.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 19	Java Problem
Column cannot be resolved to a type	UsuarioModel.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 22	Java Problem
Column cannot be resolved to a type	UsuarioModel.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 25	Java Problem
Column cannot be resolved to a type	UsuarioModel.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 28	Java Problem
Entity cannot be resolved to a type	UsuarioModel.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 11	Java Problem
EntityManager cannot be resolved to a type	UsuarioRepository.java	/Sistema/src/main/java/br/com/ciceroednilson/repository	line 32	Java Problem
EntityManager cannot be resolved to a type	UsuarioRepository.java	/Sistema/src/main/java/br/com/ciceroednilson/repository	line 48	Java Problem
EntityManager cannot be resolved to a type	UsuarioRepository.java	/Sistema/src/main/java/br/com/ciceroednilson/repository	line 60	Java Problem
EntityManager cannot be resolved to a type	UsuarioRepository.java	/Sistema/src/main/java/br/com/ciceroednilson/repository	line 72	Java Problem
EntityManager cannot be resolved to a type	UsuarioRepository.java	/Sistema/src/main/java/br/com/ciceroednilson/repository	line 86	Java Problem
EntityManager cannot be resolved to a type	UsuarioRepository.java	/Sistema/src/main/java/br/com/ciceroednilson/repository	line 98	Java Problem
GeneratedValue cannot be resolved to a type	UsuarioModel.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 15	Java Problem
GenerationType cannot be resolved to a variable	UsuarioModel.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 15	Java Problem
Id cannot be resolved to a type	UsuarioModel.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 14	Java Problem
javax.transaction.Transactional cannot be resolved to a type	UsuarioRepository.java	/Sistema/src/main/java/br/com/ciceroednilson/repository	line 45	Java Problem
javax.transaction.Transactional cannot be resolved to a type	UsuarioRepository.java	/Sistema/src/main/java/br/com/ciceroednilson/repository	line 57	Java Problem
javax.transaction.Transactional cannot be resolved to a type	UsuarioRepository.java	/Sistema/src/main/java/br/com/ciceroednilson/repository	line 81	Java Problem
SingularAttribute cannot be resolved to a type	UsuarioModel_.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 10	Java Problem
SingularAttribute cannot be resolved to a type	UsuarioModel_.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 11	Java Problem
SingularAttribute cannot be resolved to a type	UsuarioModel_.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 12	Java Problem
SingularAttribute cannot be resolved to a type	UsuarioModel_.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 13	Java Problem
SingularAttribute cannot be resolved to a type	UsuarioModel_.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 14	Java Problem
StaticMetamodel cannot be resolved to a type	UsuarioModel_.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 8	Java Problem
Table cannot be resolved to a type	UsuarioModel.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 10	Java Problem
The import javax.persistence.Column cannot be resolved	UsuarioModel.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 3	Java Problem
The import javax.persistence.Entity cannot be resolved	UsuarioModel.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 4	Java Problem
The import javax.persistence.EntityManager cannot be resolved	UsuarioRepository.java	/Sistema/src/main/java/br/com/ciceroednilson/repository	line 5	Java Problem
The import javax.persistence.GeneratedValue cannot be resolved	UsuarioModel.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 5	Java Problem
The import javax.persistence.GenerationType cannot be resolved	UsuarioModel.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 6	Java Problem
The import javax.persistence.Id cannot be resolved	UsuarioModel.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 7	Java Problem
The import javax.persistence.metamodel cannot be resolved	UsuarioModel_.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 4	Java Problem
The import javax.persistence.metamodel cannot be resolved	UsuarioModel_.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 5	Java Problem
The import javax.persistence.Table cannot be resolved	UsuarioModel.java	/Sistema/src/main/java/br/com/ciceroednilson/model	line 8	Java Problem