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34 lines
1.0 KiB
Markdown
34 lines
1.0 KiB
Markdown
# Configuring an External Dictionary {#dicts-external_dicts_dict}
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The dictionary configuration has the following structure:
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```xml
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<dictionary>
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<name>dict_name</name>
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<source>
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<!-- Source configuration -->
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</source>
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<layout>
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<!-- Memory layout configuration -->
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</layout>
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<structure>
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<!-- Complex key configuration -->
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</structure>
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<lifetime>
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<!-- Lifetime of dictionary in memory -->
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</lifetime>
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</dictionary>
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```
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- name – The identifier that can be used to access the dictionary. Use the characters `[a-zA-Z0-9_\-]`.
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- [source](external_dicts_dict_sources.md) — Source of the dictionary.
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- [layout](external_dicts_dict_layout.md) — Dictionary layout in memory.
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- [structure](external_dicts_dict_structure.md) — Structure of the dictionary . A key and attributes that can be retrieved by this key.
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- [lifetime](external_dicts_dict_lifetime.md) — Frequency of dictionary updates.
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[Original article](https://clickhouse.yandex/docs/en/query_language/dicts/external_dicts_dict/) <!--hide-->
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