| Column | Type | Size | Nulls | Auto | Default | Children | Parents | Comments | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| id | uuid | 2147483647 | uuid_generate_v7() |
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The record’s primary key. The definitive identifier of the record in the system. General Usage This column is system maintained and should be considered read only in normal operations. |
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| internal_name | text | 2147483647 | null |
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A candidate key useful for programmatic references to individual records. General Usage This column is system maintained and should be considered read only in normal operations. |
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| display_name | text | 2147483647 | null |
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A friendly name and candidate key for the record, suitable for use in user interactions General Usage This column is system maintained and should be considered read only in normal operations. |
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| application_id | uuid | 2147483647 | null |
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References the ms_syst_data.syst_applications record which owns the context. |
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| description | text | 2147483647 | null |
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A user visible description of the application context, its role in the application, uses, and any other helpful text. |
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| start_context | bool | 1 | false |
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Indicates whether or not the system should start the context for any Instances of the application. General Usage If true, any Instance of the Application will start its associated context so long as it is enabled at the Instance level. If false, the context is disabled for all Instances in the Application regardless of their individual settings. |
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| login_context | bool | 1 | false |
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Indicates whether or not the Application Context is used for making connections to the database. General Usage If true, each associated Instance Context is created as a role in the database with the LOGIN privilege; if false, the role is created in the database as a NOLOGIN role. Most often non-login Application Contexts are created to serve as the database role owning database objects. |
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| database_owner_context | bool | 1 | false |
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Indicates if the Application Context represents the database role used for object ownership. General Usage If true, the Application Context does represent the ownership role and should also be defined as a login_context = FALSE context. If false, the role is not used for database object ownership. Note that there should only ever be one Application Context defined as database_owner_context = TRUE for any one Application. |
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| diag_timestamp_created | timestamptz | 35,6 | now() |
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The database server date/time when the transaction which created the record started. General Usage This column is system maintained and should be considered read only in normal operations. |
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| diag_role_created | text | 2147483647 | √ | null |
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The database role which created the record. General Usage This column is system maintained and should be considered read only in normal operations. |
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| diag_timestamp_modified | timestamptz | 35,6 | now() |
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The database server date/time when the transaction which modified the record started. This field will be the same as diag_timestamp_created for inserted records. General Usage This column is system maintained and should be considered read only in normal operations. |
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| diag_wallclock_modified | timestamptz | 35,6 | clock_timestamp() |
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The database server date/time at the moment the record was actually modified. For long running transactions this time may be significantly later than the value of diag_timestamp_modified. General Usage This column is system maintained and should be considered read only in normal operations. |
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| diag_role_modified | text | 2147483647 | √ | null |
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The database role which modified the record. General Usage This column is system maintained and should be considered read only in normal operations. |
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| diag_row_version | int8 | 19 | 1 |
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The current version of the row. The value here indicates how many actual data changes have been made to the row. If an update of the row leaves all data fields the same, disregarding the updates to the diag_* columns, the row version is not updated, nor are any updates made to the other diag_* columns other than diag_update_count. General Usage This column is system maintained and should be considered read only in normal operations. Direct Usage This column is frequently used by by application logic to resolve the “dirty write” issues which can arise from concurrent data changes. As such any administrative override of automatic system maintenance of this value should consider the ramifications on application function. |
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| diag_update_count | int8 | 19 | 0 |
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Records the number of times the record has been updated regardless as to if the update actually changed any data. In this way needless or redundant record updates can be found. This row starts at 0 and therefore may be the same as the diag_row_version - 1. General Usage This column is system maintained and should be considered read only in normal operations. |