{"id":59533,"date":"2021-08-31T00:01:46","date_gmt":"2021-08-30T22:01:46","guid":{"rendered":"https:\/\/www.scalefree.com\/blog\/implementierung-von-data-vault-2-0-zero-keys\/"},"modified":"2026-07-09T14:55:47","modified_gmt":"2026-07-09T12:55:47","slug":"implementierung-von-data-vault-2-0-zero-keys","status":"publish","type":"post","link":"https:\/\/www.scalefree.com\/de\/blog\/data-vault\/implementierung-von-data-vault-2-0-zero-keys\/","title":{"rendered":"Implementierung von Data Vault 2.0 Zero Keys"},"content":{"rendered":"[vc_row type=&#8220;in_container&#8220; full_screen_row_position=&#8220;middle&#8220; column_margin=&#8220;default&#8220; column_direction=&#8220;default&#8220; column_direction_tablet=&#8220;default&#8220; column_direction_phone=&#8220;default&#8220; scene_position=&#8220;center&#8220; text_color=&#8220;dark&#8220; text_align=&#8220;left&#8220; row_border_radius=&#8220;none&#8220; row_border_radius_applies=&#8220;bg&#8220; overflow=&#8220;visible&#8220; overlay_strength=&#8220;0.3&#8243; gradient_direction=&#8220;left_to_right&#8220; shape_divider_position=&#8220;bottom&#8220; bg_image_animation=&#8220;none&#8220;][vc_column column_padding=&#8220;no-extra-padding&#8220; column_padding_tablet=&#8220;inherit&#8220; column_padding_phone=&#8220;inherit&#8220; column_padding_position=&#8220;all&#8220; column_element_direction_desktop=&#8220;default&#8220; column_element_spacing=&#8220;default&#8220; desktop_text_alignment=&#8220;default&#8220; tablet_text_alignment=&#8220;default&#8220; phone_text_alignment=&#8220;default&#8220; background_color_opacity=&#8220;1&#8243; background_hover_color_opacity=&#8220;1&#8243; column_backdrop_filter=&#8220;none&#8220; column_shadow=&#8220;none&#8220; column_border_radius=&#8220;none&#8220; column_link_target=&#8220;_self&#8220; column_position=&#8220;default&#8220; gradient_direction=&#8220;left_to_right&#8220; overlay_strength=&#8220;0.3&#8243; width=&#8220;1\/1&#8243; tablet_width_inherit=&#8220;default&#8220; animation_type=&#8220;default&#8220; bg_image_animation=&#8220;none&#8220; border_type=&#8220;simple&#8220; column_border_width=&#8220;none&#8220; column_border_style=&#8220;solid&#8220;][vc_column_text css=&#8220;&#8220; text_direction=&#8220;default&#8220;]\n<h2><span style=\"font-weight: 400;\">Implementierung von Data Vault 2.0 Zero Keys<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Erfahren Sie mehr \u00fcber Zero-Keys \u2013 das andere Konzept, das oft synonym mit Ghost-Records verwendet wird, die wir bereits in einem <a href=\"https:\/\/blog.scalefree.com\/2021\/04\/27\/implementing-dv2-0-ghost-records\/\">fr\u00fcheren Blogbeitrag<\/a> besprochen haben<\/span>[\/vc_column_text][divider line_type=&#8220;No Line&#8220; custom_height=&#8220;30&#8243;][vc_column_text css=&#8220;&#8220; text_direction=&#8220;default&#8220;]<span style=\"font-weight: 400;\"><div class=\"content-list-wrapper\"><p class=\"content-heading\">In this article:<\/p><ul class=\"content-list\"><li><a href=\"#warum-zero-keys-implementieren\">Warum Zero Keys implementieren?<\/a><li><a href=\"#wie-sieht-ein-zero-key-aus\">Wie sieht ein Zero Key aus?<\/a><li><a href=\"#fazit\">Fazit<\/a><\/ul><\/div><\/span>[\/vc_column_text][divider line_type=&#8220;No Line&#8220; custom_height=&#8220;30&#8243;][vc_column_text css=&#8220;&#8220; text_direction=&#8220;default&#8220;]\n<h2>Warum Zero Keys implementieren?<\/h2>\n<p>Wie im<a href=\"https:\/\/blog.scalefree.com\/2021\/04\/27\/implementing-dv2-0-ghost-records\/\"> vorherigen Teil dieser Serie<\/a> besprochen, ist ein Ghost-Record ein Dummy-Datensatz in Satellite-Entit\u00e4ten, der Standardwerte enth\u00e4lt. Einfach ausgedr\u00fcckt sind Zero-Keys die Eintr\u00e4ge in jeder Hub- und Link-Entit\u00e4t, die das Gegenst\u00fcck zum Ghost-Record des Satelliten darstellen und dessen Hash-Key enthalten. Auf diese Weise wird der Begriff \u201eZero-Key\u201c oft verwendet, um den <a href=\"https:\/\/www.scalefree.com\/de\/blog\/data-vault\/hash-keys-in-data-vault\/\">Hash-Key <\/a>des Ghost-Records zu beschreiben, der in anderen Data-Vault-Entit\u00e4ten wie<a href=\"https:\/\/www.scalefree.com\/blog\/data-vault\/point-in-time-tables-insurance\/\"> Point-in-Time-Tabellen (PIT-Tabellen)<\/a> oder Links auftauchen kann. Zusammen mit dem Zero-Hash-Key gibt es, \u00e4hnlich wie bei einem Ghost-Record, einen Standardwert f\u00fcr den Business-Key. Oder im Fall eines Composite-Business-Keys mehrere Standardwerte f\u00fcr jede seiner Komponenten.<\/p>\n[\/vc_column_text][divider line_type=&#8220;No Line&#8220; custom_height=&#8220;30&#8243;][image_with_animation image_url=&#8220;29563&#8243; image_size=&#8220;full&#8220; animation_type=&#8220;entrance&#8220; animation=&#8220;None&#8220; animation_movement_type=&#8220;transform_y&#8220; hover_animation=&#8220;none&#8220; alignment=&#8220;center&#8220; border_radius=&#8220;none&#8220; box_shadow=&#8220;none&#8220; image_loading=&#8220;lazy-load&#8220; max_width=&#8220;100%&#8220; max_width_mobile=&#8220;default&#8220;][divider line_type=&#8220;No Line&#8220;][vc_column_text css=&#8220;&#8220; text_direction=&#8220;default&#8220;]<span style=\"font-weight: 400;\">Sobald der Hub- und Link-Eintrag f\u00fcr den Zero-Key vorhanden ist, verf\u00fcgt jeder einzelne Eintrag im zugeh\u00f6rigen Satelliten \u00fcber einen Parent-Hash-Key, wodurch sogenannte verwaiste Hash-Keys (Hash-Key-Orphans) vermieden werden.<\/span><\/p>\n<h2>Wie sieht ein Zero Key aus?<\/h2>\n<p><span style=\"font-weight: 400;\">In <a href=\"https:\/\/www.scalefree.com\/consulting\/data-vault-2-0\/\">Data Vault 2.0<\/a> ist es nur erforderlich, einen einzigen <a href=\"https:\/\/www.scalefree.com\/de\/blog\/data-vault\/implementierung-von-data-vault-2-0-ghost-records\/\">Ghost-Record<\/a> in jede Satellite-Entit\u00e4t einzuf\u00fcgen. Es ist jedoch m\u00f6glich, mehrere Zero-Keys zu verwenden. Intern bei Scalefree und in vielen unserer Projekte unterscheiden wir zwei Arten von fehlenden Objekten durch verschiedene Hub-Zero-Keys.   <\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\">Bitte beachten Sie, dass der hier verwendete Hash-Algorithmus MD5 ist:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">00000000000000000000000000000000<\/span> <span style=\"font-weight: 400;\">(32-mal die Ziffer \u201e0\u201c) f\u00fcr allgemeine \u201eunbekannte\u201c F\u00e4lle, in denen ein Business-Key fehlt.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">ffffffffffffffffffffffffffffffff<\/span> <span style=\"font-weight: 400;\">(32-mal der Buchstabe \u201ef\u201c): ein dedizierter Zero-Key f\u00fcr fehlerhafte F\u00e4lle, in denen Business-Keys fehlen.<\/span><\/li>\n<\/ul>\n[\/vc_column_text][divider line_type=&#8220;No Line&#8220;][image_with_animation image_url=&#8220;29562&#8243; image_size=&#8220;full&#8220; animation_type=&#8220;entrance&#8220; animation=&#8220;None&#8220; animation_movement_type=&#8220;transform_y&#8220; hover_animation=&#8220;none&#8220; alignment=&#8220;center&#8220; border_radius=&#8220;none&#8220; box_shadow=&#8220;none&#8220; image_loading=&#8220;lazy-load&#8220; max_width=&#8220;100%&#8220; max_width_mobile=&#8220;default&#8220;][divider line_type=&#8220;No Line&#8220;][vc_column_text css=&#8220;&#8220; text_direction=&#8220;default&#8220;]<span style=\"font-weight: 400;\"> Ein gutes Beispiel, das den \u201eError\u201c-Zero-Key erfordert, ist eine fehlerhafte oder fehlende obligatorische Objektbeziehung in der Quelle. In diesem Fall wird der Zero-Key<\/span> <span style=\"font-weight: 400;\">ffffffffffffffffffffffffffffffff <\/span><span style=\"font-weight: 400;\">in der Link-Entit\u00e4t gefunden, was auf eine unerwartet fehlende Hub-Referenz hinweist. Denken Sie daran: Sollten Sie sich f\u00fcr die Implementierung des Error-Zero-Keys entscheiden, ist es nicht erforderlich, einen Ghost-Record mit dem Error-Zero-Key als Parent-Hash-Key in Satellite-Entit\u00e4ten einzuf\u00fcgen.<br \/>\n<\/span><br \/>\n<span style=\"font-weight: 400;\">F\u00fcr den Zero-Key in Link-Entit\u00e4ten ist nur ein einziger Eintrag erforderlich, der den Zero-Hash-Key sowohl als Link-Hash-Key als auch als Hub-Referenz enth\u00e4lt.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"> <\/span>[\/vc_column_text][divider line_type=&#8220;No Line&#8220;][image_with_animation image_url=&#8220;29561&#8243; image_size=&#8220;full&#8220; animation_type=&#8220;entrance&#8220; animation=&#8220;None&#8220; animation_movement_type=&#8220;transform_y&#8220; hover_animation=&#8220;none&#8220; alignment=&#8220;center&#8220; border_radius=&#8220;none&#8220; box_shadow=&#8220;none&#8220; image_loading=&#8220;lazy-load&#8220; max_width=&#8220;100%&#8220; max_width_mobile=&#8220;default&#8220;][divider line_type=&#8220;No Line&#8220;][vc_column_text]<span style=\"font-weight: 400;\"> Es ist auch wichtig darauf hinzuweisen, dass alle Beispiele, die wir in dieser Blogserie zeigen, den Hash-Algorithmus MD5 verwenden, der 32-stellige hexadezimale Sequenzen ausgibt. F\u00fcr Data-Vault-2.0-Projekte, die andere Hash-Algorithmen wie SHA256 verwenden, passen Sie einfach die L\u00e4nge der von uns vorgeschlagenen Zero-Keys (<\/span>\u201e<span style=\"font-weight: 400;\">0000\u2026\u201c \/ \u201effff\u2026\u201c<\/span><span style=\"font-weight: 400;\">) an die gew\u00fcnschte Hash-Ausgabel\u00e4nge an.<\/span>[\/vc_column_text][divider line_type=&#8220;No Line&#8220;][vc_column_text css=&#8220;&#8220; text_direction=&#8220;default&#8220;]\n<h2>Fazit<\/h2>\n<p><span style=\"font-weight: 400;\">Wir hoffen, dass dieser Blogbeitrag dazu beigetragen hat, die Implementierung von Zero-Keys in einer Data-Vault-2.0-L\u00f6sung sowie die Unterschiede zwischen den Konzepten von Ghost-Records und Zero-Keys zu verdeutlichen. Teilen Sie Ihre Erfahrungen bei der Implementierung dieser Konzepte gerne in den Kommentaren unten mit! <\/span>[\/vc_column_text][\/vc_column][\/vc_row]\n","protected":false},"excerpt":{"rendered":"<p>[vc_row type=&#8220;in_container&#8220; full_screen_row_position=&#8220;middle&#8220; column_margin=&#8220;default&#8220; column_direction=&#8220;default&#8220; column_direction_tablet=&#8220;default&#8220; column_direction_phone=&#8220;default&#8220; scene_position=&#8220;center&#8220; text_color=&#8220;dark&#8220; text_align=&#8220;left&#8220; row_border_radius=&#8220;none&#8220; row_border_radius_applies=&#8220;bg&#8220; overflow=&#8220;visible&#8220; overlay_strength=&#8220;0.3&#8243; gradient_direction=&#8220;left_to_right&#8220; shape_divider_position=&#8220;bottom&#8220; bg_image_animation=&#8220;none&#8220;][vc_column column_padding=&#8220;no-extra-padding&#8220; column_padding_tablet=&#8220;inherit&#8220; column_padding_phone=&#8220;inherit&#8220; column_padding_position=&#8220;all&#8220; column_element_direction_desktop=&#8220;default&#8220; column_element_spacing=&#8220;default&#8220; desktop_text_alignment=&#8220;default&#8220; tablet_text_alignment=&#8220;default&#8220; phone_text_alignment=&#8220;default&#8220; background_color_opacity=&#8220;1&#8243; background_hover_color_opacity=&#8220;1&#8243; column_backdrop_filter=&#8220;none&#8220; column_shadow=&#8220;none&#8220;&#8230;<\/p>\n","protected":false},"author":94,"featured_media":59537,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3948],"tags":[],"class_list":["post-59533","post","type-post","status-publish","format-standard","has-post-thumbnail","category-data-vault"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Erfahren Sie mehr \u00fcber Zero-Keys \u2013 das Konzept, das oft synonym mit Ghost-Records verwendet wird. 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