Weegy: Solved by delta cost over delta time, or 1. User: Identify and briefly describe the three types of constraints that can affect how you schedule resources. Weegy: ?A unique constraint (also referred to as a unique key constraint) is a rule that forbids duplicate values in one or more columns within a table. Unique and primary keys are the supported unique constraints. [ For example, a unique constraint can be defined on the supplier identifier in the supplier table to ensure that the same supplier identifier is not given to two suppliers. ?A primary key constraint is a column or combination of columns that has the same properties as a unique constraint. You can use a primary key and foreign key constraints to define relationships between tables. ?A foreign key constraint (also referred to as a referential constraint or a referential integrity constraint) is a logical rule about values in one or more columns in one or more tables. For example, a set of tables shares information about a corporation's suppliers. Occasionally, a supplier's name changes. You can define a referential constraint stating that the ID of the supplier in a table must match a supplier ID in the supplier information. This constraint prevents insert, update, or delete operations that would otherwise result in missing supplier information. ] User: What are the four types of resource constraints? Please list them and provide an example of each. Weegy: ?A unique constraint (also referred to as a unique key constraint) is a rule that forbids duplicate values in one or more columns within a table. Unique and primary keys are the supported unique constraints. [ [ For example, a unique constraint can be defined on the supplier identifier in the supplier table to ensure that the same supplier identifier is not given to two suppliers. ?A primary key constraint is a column or combination of columns that has the same properties as a unique constraint. You can use a primary key and ... (More)

Weegy: Project has three default base calendars – Standard (traditional), 24 Hours, and .... Any task can be identified as a milestone by making the duration value 0. (More)

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