long text = > plain text, summary and trimmed, trimmed,default, hidden
entity refernece => entity id, rendered entity, label, hidden
field collection => links to field collection items, field collection items, fields only.
date field 3种 field type: Date (ISO format), Date (Unix timestamp), Date
date field 3种 display format: date and time , time ago, plain
date field 3种 widge: pop-up, select list, text field.
FIELD COLLECTION在数据库里的显示
entity id, field_field_collection_value
block custom
当新建一个custom block后就会在数据库出现一条新的记录
BID , BODY , FORMAT , TITLE
TAXONOMY有4个相关的表
这些元素在views里面基本有相同的配置和选择
不管在panels下面还是views里面还是manage display，都有相应的formatter可以选择，label, title 之类都可以设置.
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