| 221 | Are there enough routines that implement database operations? | Find user-defined routines that implement database operations (comment refers to an operation) but show these only if there are at least eight such routines. Contracts of database operations are specified in the system analysis documentation. The contracts apply the idea of design by contract in the field of databases. | General | INFORMATION_SCHEMA+system catalog base tables | 2021-11-03 20:07 | MIT License | |
| 222 | A routine is invoked only once | Find user-defined routines that are invoked by exactly one user-defined routine. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2023-12-10 17:11 | MIT License | |
| 223 | A setter does not update a table | Find user-defined non-trigger SQL and PL/pgSQL routines that name starts with "set" (but not with "setting") but do not contain a UPDATE statement. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2022-11-27 18:35 | MIT License | |
| 224 | A state machine is implemented with the help of an enumeration type | Find implementations of state machines that uses an enumeration type. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2023-11-26 15:39 | MIT License | |
| 225 | A table has the same name as a routine | Find table names that are the same as some routine name. Use different names to avoid confusion. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2021-02-25 17:30 | MIT License | |
| 226 | At most one row is permitted in a table (based on check constraints) | Find base tables and foreign tables where based on a check constraint, a key constraint, and a NOT NULL constraint can be at most one row. Make sure that this is the real intent behind the constraint, not a mistake. Find tables where a check constraint permits only one possible value in a column, the column has NOT NULL constraint, and constitutes a key, i.e., has the PRIMARY KEY or UNIQUE constraint. | General | INFORMATION_SCHEMA+system catalog base tables | 2022-11-03 15:21 | MIT License | |
| 227 | At most one row is permitted in a table (based on enumeration types) | Find base tables and foreign tables where based on the type of a column, a key constraint, and a NOT NULL constraint can be at most one row. Make sure that this is the real intent behind the constraint, not a mistake. Find tables where a column has an enumeration type with exactly one value, the column has NOT NULL constraint, and constitutes a key, i.e., has the PRIMARY KEY or UNIQUE constraint. | General | INFORMATION_SCHEMA+system catalog base tables | 2022-11-03 15:18 | MIT License | |
| 228 | Base table column of surrogate key values does not have an integer data type (based on column names) | Find base table columns that belong to a primary key, unique, or foreign key constraint and that name refers to the possibility that these are used to hold surrogate key values. Find the columns where the data type of the column is not an integer type or uuid. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2023-11-13 12:10 | MIT License | |
| 229 | Base table columns permitting e-mail addresses without @ sign | Find non-foreign key base table columns that name refers to the possibility that these are used to register e-mail addresses. Find the columns that do not have any simple CHECK constraint that contains @ sign. A simple check constraint covers a single column. In this case registration of e-mail addresses without @ is most probably not prohibited. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2021-02-25 17:29 | MIT License | |
| 230 | Base table columns permitting empty strings and strings that consist of only whitespace characters | Find non-foreign key columns of base tables that have a textual type and do not have any simple CHECK constraint, i.e., a constraint that involves only one column. Such columns can contain the empty string and strings that consist of only whitespace. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2021-02-25 17:29 | MIT License | |
| 231 | Base table columns permitting empty strings and strings that consist of only whitespace characters (2) | Find non-foreign key columns of base tables that have a textual type and do not have a simple CHECK constraint (i.e., a constraint that involves only one column) that seems to prohibit empty strings and strings that consist of only whitespace as well as a simple CHECK constraint that specifies permitted symbols. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2024-01-02 16:52 | MIT License | |
| 232 | Base table columns permitting negative prices/quantity | Find non-foreign key base table columns that name refers to the possibility that these are used to register prices/quantities. Find the columns that do not have any simple CHECK constraints, i.e., a constraint that covers only this column. In this case registration of negative price/quantity is most probably not prohibited. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2023-10-06 14:14 | MIT License | |
| 233 | Base table columns permitting telephone numbers without digits | Find non-foreign key base table columns that name refers to the possibility that these are used to register phone numbers. Find the columns that do not have any simple CHECK constraint that references to the character class of digits. A simple check constraint covers a single column. In this case registration of e-mail addresses without digits is most probably not prohibited. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2023-11-09 12:52 | MIT License | |
| 234 | Base table columns permitting temporal values that may be outside the range of logical values | Find base tables columns with temporal types (date and timestamp) that do not belong to a foreign key and that do not have any associated simple CHECK constraints, i.e., constraint that involves only one column. For instance, in the column registration_time that does not have any associated CHECK constraints could be values '1200-01-01 00:00' or '5900-12-31 00:00'. Rows with these values most probably represent wrong propositions and the system should restrict registration of such data. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2023-12-17 00:40 | MIT License | |
| 235 | Base table columns permitting URLs without a protocol | Find non-foreign key base table columns that name refers to the possibility that these are used to register URLs. Find the columns that do not have any simple CHECK constraint that references to a protocol. A simple check constraint covers a single column. In this case registration of URLs without a protocol is most probably not prohibited. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2023-11-01 13:13 | MIT License | |
| 236 | Base table columns with an array type | Find base table columns with an array type. Think through as to whether a column with an array type could be replaced with a separate table. | General | INFORMATION_SCHEMA+system catalog base tables | 2020-11-06 14:51 | MIT License | |
| 237 | Base table FILLFACTOR is not 100 | Find all base tables where FILLFACTOR is not 100, i.e., the default value. | General | INFORMATION_SCHEMA+system catalog base tables | 2020-11-06 14:51 | MIT License | |
| 238 | Base table has a national identification number as a key | Find base table columns that name refers to the possibility that these are used to register national identification numbers (personal codes). Find the columns that constitute a key of a table. This in turn enforces a (restrictive) business rule that all persons of interest come from one country. Make sure that the enforced constraint is valid, i.e., there is indeed such rule in the domain. | General | INFORMATION_SCHEMA+system catalog base tables | 2020-11-06 14:51 | MIT License | |
| 239 | Base tables and foreign tables that do not have any CHECK constraints on non-foreign key columns | Identify possibly missing CHECK constraints. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2021-02-25 17:29 | MIT License | |
| 240 | Base tables and materialized views without any index | Find base tables and materialized views that do not have any index. | Problem detection | INFORMATION_SCHEMA+system catalog base tables | 2023-11-05 19:39 | MIT License | |