1. Data integrity is the state that exists when computerized information is predictably related to its source and has been subjected to only those processes which have been authorized by the appropriate personnel.
2. Data integrity is a measure of the quality of information. The integrity of data is measured in terms of the following characteristics: accuracy, reliability, timeliness, conciseness, non-redundancy and consistency. Data integrity has been achieved and can be maintained when the data that is stored on a system is physically and procedurally secure from unauthorized and/or unwanted access, protected from concurrent and/or unauthorized or malicious manipulation and current across all locations in which it is maintained and used.
Enterprise Data Management

• is structurally sound, weathertight, and in good repair; and
• contains a safe electrical wiring system adequate for lighting and other devices; and
• contains a heating system capable f sustaining a healthful temperature ( approximately 70° Fahrenheit) for a displaced person, except in those areas where local climatic conditions do not require such a system; and
• is adequate in size with respect to the number of rooms and area of living needed to accommodate the displaced person. The number of persons occupying each habitable room used for sleeping purposes shall not exceed that permitted by local housing codes or, in the absence of local codes, the policies of TxDOT. In addition, TxDOT shall follow the requirements for separate bedrooms for children of the opposite gender included in local housing codes, or in the absence of local codes, TxDOT’s policy that children of the opposite gender not occupy the same sleeping room if they have reached the age of 12 years old at the time of displacement.
• includes a well lighted and ventilated bathroom which provides privacy for the user, containing a sink, bathtub or shower stall and a toilet, all in good working order and properly connected to appropriate sources of water and to a sewage drainage system; and in the case of a housekeeping dwelling includes a kitchen area that contains a fully usable sink, properly connected to potable hot and cold water sources and to a sewage drainage system, and adequate space and utility service connections for a stove and refrigerator; and
• contains unobstructed access to safe, open space at ground level; and
• in the case of a displaced person with a disability, be free of any barriers which would preclude reasonable ingress, egress, or use of the dwelling by such a displaced person. This includes all physical disabilities, not just those attributable to persons who are motion impaired.

1. Deflection is the bending or breaking of the surface as a result of a load or pressure.
2. Deflection is the change in shape or decrease in diameter of a conduit, produced without fracture of the material.

1. A delineator is a reflecting device mounted at the side of the roadway, in series, to indicate the alignment of the roadway.
2. Delineators are drawings or painted lines indicating guidelines for paved roadways. Flexible delineator posts cause little or no damage to a vehicle striking the post.
Maintenance Collection

In computer networks, a demilitarized zone (DMZ) is a computer host or small network inserted as a “neutral zone” between a company’s private network and the outside public network. TxDOT establishes a DMZ to prevent outside users from getting direct access to a TxDOT server that hosts internal information resources.

1. The Department of Information Resources is a state agency established to aid other state agencies in planning for effective, efficient, and economical use of automated information and telecommunications systems.
Procurement Manual
2. The Department of Information Resources (DIR) was established in a comprehensive state statute that addressed the major aspects of information technology management. The 77th Legislature designated oversight of information resources management to the DIR executive director, who now serves as the state’s chief information officer, with authority for all aspects of information technology for state agencies.
Information Security Manual

1. A descriptive code is a four-digit computer code number placed after a bid item number used to further describe that bid item and is unique to that specific item description.
Letting Management Office
2. A descriptive code is a four-digit number representing different ways to bid an item - such as different units of measurement, different sizes of the item or different types of the item. The code is a part of the estimate and quantity sheet in the project plans and bid inserts in a proposal.

See also Bid Item.

Plans, Specifications and Estimate Preparation Manual

1. A disadvantaged business enterprise is any business certified by the department in accordance with 49 CFR Part 26.
Engineering Architectural and Surveying Services Manual’
2. A disadvantaged business enterprise is any small business, certified by the department, which is 51 percent owned by one or more minorities or women, or, in the case of a publicly owned business, at least 51 percent of the stock is owned by one or more minorities or women, and whose management and daily business operations are controlled by one or more such individuals.
Maintenance Contract Manual

• as a direct result of a written notice of intent to acquire, the initiation of negotiations for, or the acquisition of such real property in whole or in part for a highway project; or
• as a direct result of rehabilitation or demolition for a highway project; or
• as a direct result of a written notice of intent to acquire, or the acquisition, rehabilitation or demolition of, in whole or part, other real property on which the person conducts a business or farm operation, for a highway project.

1. A district is one of the 25 geographical areas, managed by a district engineer, in which the department conducts its primary work activities.
2. A district is an aggregation of traffic serial zones used in travel demand modeling for analysis and reporting.
Traffic Data and Analysis Manual

1. A domain is a set of all possible values for an attribute; it can be text, numeric, date or time, or be specified via permitted values. An example is the official two-character abbreviations for each state.
2. A domain is a cohesive collection of hardware and software that is used to implement the specific function of a system such as the Production System.